Now, to find a good headphone amp, so you can make the absolute most out of them.

There's several avenues for this, but the most affordable/practical would probably be a monitoring amplifier.

Something like this might be your best bet: http://www.amazon.com/Behringer-MA400-Headphone-Amplifier/dp/B000H2D89G/ref=sr_1_12?ie=UTF8&qid=1301420794&sr=8-12