I have been really satisfied (and still using) with the Sennheiser HD-595 Premier Headphone (which cost about $300 at the time; the most expensive headphone I've ever spent). Sennheiser is known for making leading professional headphones/microphones/etc. 

…And then there's MONSTER. 

As far as I'm aware, I've only known MONSTER for selling really really expensive overpriced cables for TV/home theater/audio input components. Well, Monster has teamed up with hip hop artist/actor/record producer, Dr. Dre (made Eminem famous) and created this "High-Definition" headphones, which they call BEATS. 

I'll be comparing the Monster Beats headphone with the Sennheiser HD-595, since it's the most expensive headset that I own (till this one), and I'd be shocked to find something that sounds better than the HD-595 (that's around the same price range or less). 

I think it's obvious most people will expect the bass to be the #1 priority with this headphone, considering it's by MONSTER + Dr. Dre and called Beats. Well, it definitely doesn't disappoint there. The Monster Beats definitely wins in terms of bass. (Of course, Dr. Dre's genre relies heavily on it). If you listen to lots of rock/rap then you'll love the bass on these. If you get headaches with bass or you just can't stand it, then obviously, these aren't really for you. 

The Monster Beats headphones require two AAA batteries to listen. You cannot use the headphones if no batteries are inserted, or if you don't have the switch to ON (located on the right side of the headphone). The batteries go inside the left compartment of the headphone. I've been listening with this headphone for the past two days and the batteries are still going. I'll have to use it longer to fully test the battery life, but hopefully it'll last several months because that would be really annoying if I have to keep replacing batteries. Since the headphone is powered by the battery, the sound is obviously amplified more, as well as the bass, than regular headphones. Whether you're using this on your computer, portable device or iPod, you can have the volume at a low setting and it'll still sound a lot louder than if you were to use a different headset at that volume setting. 

For taking the headphones on-the-go and for traveling, the Monster Beats win again in terms of portability. The Monster Beats can be collapsed nicely and comes with a nice protective case to store it in; so you won't be damaging that nice shiny glossy sleek look of the headphone. The Beats definitely has a more youthful look and the shiny piano black finish will definitely catch more attention; however, personally, I think the Sennheiser HD-595 has more of a professional look. The Sennheisher HD-595 has more of a soft earmuffs cushion and the cups are larger, whereas the Beats are leather and smaller. The headphone cable for the Beats is also shorter, so the length is suitable for portable devices; whereas the HD-595, the cord is insanely long and not really made for walking around with it (but you can always replace the cord). 

Without taking off your Beats headphone, you can press and hold the center button (The beat logo) on the right side of the headphone and it'll mute the sound until you release it again; this is convenient when someone needs to tell you something for a brief moment or you want to hear what's going outside for just awhile. The Beats headphone are closed headphones, so just by putting the headphone, you'll notice outside noise being reduced. 

The vocals treble seem to be slightly higher than normal, but then again, it is also counter-balanced because again, the bass is stronger than what most headphones produce. The Monster Beats is great for hip hop/rap/rock music that use bass, of course, but what about others? 

For overall music, despite the impressive bass on the Beats, I am still way more impressed with the sound of the HD-595. Compared to the HD-595, I feel the Beats lack more depth in surround sound. Granted, the Beats headphone are closed headphones, whereas the HD-595 are open for a more natural sound than some confined studio recording feel. When I'm listening to the same music with the HD-595, I feel like I'm actually there listening to a concert/theater and can really hear the separation of instruments/vocals/sound effects/etc.; it really feels like true surround sound. On the other hand, the Beats doesn't quite have that feel. With the Beats, despite some surround sound, I still know I'm listening with headphones. Don't get me wrong, the Beats doesn't have poor surround sound, but once you experience other high-end headphones, you will notice the difference in depth/separate channels. 

Pros: 

+ Impressive Bass. Best for bass lovers. 
+ Amplifies sound for portable mp3 players/iPod 
+ Noise cancellation 
+ Stylish/glossy finish design (great packaging/presentation) 
+ Leather cushion/material feels high quality/comfortable 
+ Headphones can collapse when you put it away 
+ Nice solid case for storing the headphones 
+ Quick mute button on the right side of the headphone (the Beat logo) by holding it. 
+ Headphone cord only on the left side. (Also comes with iPhone, Blackberry, etc speaker black cord) 

Cons: 

- Could use more depth in surround sound. (compared to Sennheiser, there's more surround sound with the HD-595, as you'll be able to distinguish different instruments/beats as separate channels/different directions) 
- Requires two AAA and you must turn on the headphone switch ON. Forgetting to turn the switch off can waste the battery. Headphones will NOT run without batteries. 
- Too expensive. (like any other Monster Products) 

Overall, if you absolutely love bass and listen to mostly hip-hop/rap/rock; noise-canceling; made for traveling; then these headphones are for you. However, if you want overall balanced sound, greater depth/surround sound concert/theater feel, then I highly recommend the Sennheiser HD-595 (not to mention, it's about half the price cheaper now than what I paid for it).

These headphones are so cool! You can get them for a discount here.

Watch this video review:

Buy the Monster Beats Studio Headphones by Dr Dre right here, at a discount!

Bose QuietComfort 2 Noise Cancelling Headphones Review

The Bose QuietComfort 2 noise-canceling headphones are far and away the most effective headphones I’ve ever owned. For half the price of some other noise-cancelling headphones, they’ve provided me an easy and relaxing way to enjoy music no matter where I am. The QuietComfort 2 headphones produce crystal clear sound under normal circumstances, but are particularly valuable while in a live, noisy environment. Want to buy these head phones? They are currently on sale at Amazon through this link. Hurry though as the special offer ends soon.

Let me give you an example. My job requires me to travel by air quite frequently, and I was consistently frustrated by the roar of jet engines forcing me to crank up the volume on my iPod. It seemed for a while that the only solution to this problem would be to either spend flight after dreary flight listening to the monotone hum of turbines, or slowly deafen myself with music loud enough to rattle your teeth. Purchasing the QuietComfort 2’s changed all of that. Now, when I fly, I might as well be in a soundproof room with the musicians to whom I’m listening. Owning these headphones has taken a lot of the stress out of traveling.

There is one small drawback to the QuietComfort 2’s, but certainly nothing that should discourage someone from purchasing them. The headphones are powered by one AAA battery, which lasts for about 30-40 hours. Switching out batteries has not been a big concern of mine thus far – in fact, I think I’ve only gone through two in the year I’ve owned the unit. Unless you are listening to music all day, every day, replacement batteries are a pretty minimal expense, and one that could always be negated by purchasing rechargeable AAA’s.

If you are looking to the Bose QuitComfort 2, I highly recommend you buy them from Amazon here. Can’t find them cheaper anywhere else.

My QuitComfort 2’s are very comfortable. They fit snugly over my ears and effectively seal out background noise without pinching anything or giving me a headache. My model even has the capability to receive cell phone input, although I have yet to explore that particular aspect of the unit. All in all, I would heartily recommend the QuietComfort 2 from Bose. I think they’re a great product at a very reasonable price.