Hi,
For listening to music and gaming (although i'm not a gamer at all), I would suggest the 212.
I have both the HD 212 and the HD 205 and in my opinion, the 212 sounds better and is more
comfortable.
The sound of the 212 is rather good and full for a budget headphone. I have to admit that there are
headphones sounding much better, but these also cost much more. An important notice is that
the 212's have a lot of power in the low frequencies. If you like bass, there is no problem, but some
people might find it too much, so if you don't like a lot of bass, the HD 202, which looks similar to
the 212, might be a better choice.
Concerning the comfort, as Rosmadi Mahmood already mentioned, both headphones are supra-aural
(on-the-ear). Here should be made a distinction between the 212 and 205. The earpads of the 212 are
larger, which make that for people with small ears, it is more a circumaural (around-the-ear) as supra-
aural headphone. In fact, I perceive the 212 as being between a supra- and circumaural headphone. The
HD205 is definitely supra-aural and also presses harder on the ears. I can wear the 212 longer than the
205.
One advantage of the HD205 is it's single sided cable.
I hope that this helps.
Regards