Thanks for the reply. I was reading the OP and came to the conclusion that if I get an amp I'm going to need at least something like the Beyerdynamic DT 770 250 Ohm headphones which are $170 on Amazon right now.
Decisions, decisions.
I really want high quality sound. I'm not sure if simply spending $100 on low impedance headphones and calling it a day will satisfy me.
No No No....You've got it all wrong. You don't have to get high impedance headphones to get good sound. V-Moda M80s, Soundmagic HP100, AKG K167, Sennheiser HD25, and a boatload of other headphones offer top notch sound at a low impedance and without the need of an amp.