HD201 (plugged in now while typing an listening to The Mars Volta) are in some way a strange headphone, for me they have been a hate (first) and love (now) affair. They are balanced to my ears, but the bass presence is not their main strength, so if yuo're looking for bass heavy sound they're not for you. The bass is there, it's just a bit more "polite" than some other cans in this class. And they're not very sensitive, a powerful source is reccomended, they don't sound so strong straight out of a DAP/CD player. I like them, as I've said, for their balaced sound, to my ears they give the best if they're not played at very loud volume and if they're coupled with a warm sounding source. For just 20 Euros they can't be beat IMO as cheap closed phones.
I've had the XD200 you posted too. They can be acceptable for watching movies, but I found them too veiled sounding for music (but I can be wrong, I've always listened to them unamped). I gave them to my girlfriend about a year ago.
Regards
K.