if you listen to a lot of rocks, Grado SR225i or even the 325is is the way to go,
for Rock listening, i find that the HD598/HD600/HD650 is too laidback, and too wide, so the energy from the rock music is not translated properly, but with proper setup, HD600/650 will shines on almost any genre of music,
Denon D2000 is bassy, quite the V-shaped sound that most rock recordings are,
ATH-AD900 is another choice, but it lacks bass and the soundstage is too wide to enjoy rock properly, for classical or pop, AD900 shines.
K701 also is another option, soundstage is very wide, the imaging is good, but, its very hard to drive.
DT880/600 is very good, great dynamics, nice rounded bass, excellent highs though a bit sibilance.
but, if you listens to a very wide range of genre, I strongly reccomends you to get the HD600,
its more neutral than the HD650 which is more laidback and bassy, and it doesn't as demanding as the HD650 on the amp or DAC, its should sounds very good out of your essence.
and not to mention, its also very comfortable on the head.