kimchee, i've tried the ety 4ps', grado's 60/80/125, allessandro, and senn 580's.
etys' are too bright, lack of bass. but very clear. not comfortable for me.
senn 580's were comfortable. good sound, better with amp. a little on the expensive side unless u get a deal. a must have if you have multiple headphones
grados and allessandro all sound really good in my opinion amped and unamped. they get a little uncomfortable after many hours..but best bang for the buck i would say.
i haven't tried any shures yet, but i hear the shure5c's have good bass compared to ety's.
if i were to only have one pair i'd go for the Alessandro MS1's. decent price and excellent sound. hope that helps.