I've been using my 440's for the last 5 days and I must say that they are amazing. Reading the comments here, I thought the bass would be low. But I am really surprised. It is much higher than I've thought. It is just the right amount of bass that I needed. Also the build quality is nice. The cable quality is really really high compared to the other headphones and in-ears i've used over the last few years. The only concern I have with these headphones is the headband (idk if this is the right word for that part). It is extremely stiff. After few hours of use, it starts to drill into my head. The ear pads are pretty comfortable for my ears. They don't get too hot even after hours of use but the headband is just awful. For now, I'm just hoping that it will get softer in time. The carrying pouch that came with it is a cool extra. I don't really take out these headphones outside but when I want to take them to work, I can easily carry them in the pouch.
So overall I'm very satisfied with these headphones. A friend with good ears (who's been in the music business for some time) tried them and he too liked them a lot.
Edit: I've tried these headphones with all kinds of music. They are amazing with country, classical music, classic rock, blues, hard rock and especially vocal jazz. Frank Sinatra sounds just amazing with these headphones. :)
My friend, i totally agree with you ;D The headband & maybe the weight is the only weak points, that i see with the 440s. For me, the weight is not that much of a problem, because i have a big head, but the headband . . . sometimes it hurts from a specific angle /position :-/ But i'll mod my 440 soon, i have ordered the Headband of the Beyerdynamic T1 and i will mount it on my 440 xD