I've already posted my thoughts in a different thread. However I'll say this again here and expound upon it... If you MUST buy Beats, the Beats Pro are the way to go. Hell, even Tyll agrees with that. But here is the sad sad fact, it does still have its problems.
Its problems are that they are REALLY heavy (but I suppose one could get used to the weight), but that is forgivable considering that they are constructed from aluminum. That is a really nice touch. The next problem I see is that they aren't the fastest in response that I have heard, which makes them pretty much useless for serious monitoring. However, though they don't have the fidelity for monitoring they are still good for DJing. And the pads are a bitch to change (this could not be a negative, but I tend to like innovative and simple, which these do not). Finally the price. As nice as these are, I just can't find a way to justify the $450 price tag.
The things that make up for the problems are that you can use either side for input, and respectively use the opposite for output allowing you to daisy chain headphones or what ever you need to. The sound is surprisingly good. Again, I wouldn't use them in the Studio, but they are certainly good enough for DJing, and on that same idea they have nice hinged ear pads for single side monitoring while DJing. They are really well built and have user replacable cables, and the ones that they give you lock into place, which is nice for DJs (again). The idea that you don't have to worry about either side coming out while you are spinning is really nice, on one side they give you... er... give with the coiled cable, and on the other they give you a locking mechanism.
However, the sound is not of $450 headphones, and with headphones like the TMA-1s and the HD25-1 IIs that are equally well built at $200 (and sounding better), I'm sorry, no matter how well built they are, I can't justify them being at $450. If they were closer to that price point I'd say they would be an EXCELLENT competetor, but as it stands they share the same affliction as the rest of the Beats line... they are grossly overpriced. Are they good? Yes, $450 good? not a chance in hell. There are better headphones for that price range that are equally well built, and even less as I have mentioned. I think they could compete well at $250, because of the all metal construction, the sound isn't as good as HD25 or TMA-1, but the metal construction could justify them being more expensive not to mention the "b." If you took those two things away I'd say they were worth $150 (providing that they used better plastic with metal hinges and bar through the headband like the M50s and not the same cheap plastic they used on the rest of their headphones).
On a personal note, I still think the bass is a tad too strong, and they can never achieve a neutral response (much like the TMA-1s, though the TMA-1s can get a bit closer), but they work. They are a fun sounding pair of cans to me. They would be a large set of on the go headphones in my opinion or a DJ set.