I'm a newbie and a noobie and I'll try to phrase this to the best of my ability since there is a ton I don't understand in terms of ...audiophilia. I need/want new headphones in the 30-50$ range and my picks are Sennheiser PX 90 OR Audio-Technica ATH-FC700 and I need help since I only have enough money for one and I need the advice/opinion/thoughts of the experts.. I don't know anything about sound signature but I listen to a lot of songs/artists.. From Aerosmith to Justin Beiber to U2 to Eminem to Paramore etc, etc. If this helps, I am accustomed to the sound delivered by Creative EP-630.. Thanks in advance!!