HD600. They have a smooth & even sound that works great with any genre for a very low price given the sound quality. Grados are very fun and work well with vocals and shredding guitars but their treble can be piercing (and imo, eventually intolerable) unless you step up to HF-1/RS-1 which are fairly expensive.
Thanks man, I was looking a lot at them, I've read they have really low listening fatigue too.
Though, will a Pa2v2 be enough to power HD600's? has anyone tried this?