I ordered 2 triple fi's (one is a gift) and a pair of the x10's.  X10's got boxed back up within 5 minutes.  The UE's had a bit stronger bass, definitely louder (lower impedance) and the highs...well enough has been said about them.   I am quite frankly surprised at the praise the x10 is...

This is exactly the type of info I'm looking for.  I had the impression that the 900's had an overall better low end than the D2000's.  I think I read somewhere that the D5000's can be had for under $400....if so, they would be in consideration.  I need to go look for them some more.   Yeah...

First off, hello everyone.  I gotta admit, I'm just getting into this branch of the audio enthusiast world.....have a bit of experience with 2 channel though.  (Love my Eminent Tech's )  How I've come to this arena though is because of my Roland TD-9 drum kit.  I really enjoy using headphones...