I already made a post here without much success. This time, I'll keep it brief. My budget is limited, and so are my options. I've narrowed it down to this (all prices are argentine pesos):
Superlux 681 (used) $400
Fostex T20 (used) $600
Sennheiser HD419 (refurbished) $680
I'll use them mainly at home, from iPod or computer. Can't afford and amp for now.
Please give me some opinions or info on what you'd choose.