Wouldn't have to be a strictly-intended 'portable' headphone, but I need something that is rugged and packable for to/from work everyday, some business trips and etc. Like in a courier bag or small backpack. And, needs to be open design. (got a closed portable already) And, needs to be way comfy. And, needs to be at least a lateral move in SQ from my ATH-ES7. An upgrade from the ES7 would be preferred. (doesn't have to sound the same though) Would prefer circumaural. Yeah, I know I'm being picky. Best thing I'm finding to match my conditions is the HD238. It's not circumaural, but it is supposed to be comfy at least. I know Grado is a kinda/sorta for this, but I really want all-day wearability. I'll leave it to the replies to duke that issue out, as I haven't any experience with 'em. Other suggestions? This would be using a portable amp (PPAS) so no worries there. edit: not concerned about price limits, but being realistic let's say $300 tops.