I'm gonna give you my 2 cents..right after I finish this fantastic roast beef sandwich....In about 2 minutes, so don't go anywhere yet.
Edit:
Ok, done. Sorry, once I hit some nice ass food, everything else takes a back seat
Anyway, I've heard the HD 280's and the V 6's (7506's) on 3 occasions and here's what I think:
!)Both excellent cans for the money
2)The 280's get a much better seal...you're practically deaf in these even with no music on.
3)The V6's have more of a colored sound, reprodicing some warmth compared to the pristine - almost clinically sterile - sound of the 280's ...which I happen to prefer for some of the music I listen to.
4)I think that the 280's have the abililty to bring out flaws that may be inherant in a system or media, whereas the V6's would probably do a good job of covering those nuances.
5)I thought I saw someone say that the presentation of the 280's was laid back...I got the total opposite impression. IMO, they were very up front/in your face...but all at once, meaning that the soundstage isn't very dynamic...it's a very tight sound in comparison.
Um...when I heard both of these, I definetely liked (and this is personal preference of course) the sound of the 280's more. I felt that there was more oomph for the buck. Now, I'm really really sure that both these cans are FULLY burned in..because they're running ALL DAY ..every day through a wall mounted 3 channel outboard/amp at B&H video. They probably only shut them off when the store is closing at night.
Overall, I think it depends on what kind of music you'll be listening to and for how long. I think that the snugness of the 280's is pretty comfortable, but I couldn't see wearing them all day...Then again, I couldn't see wearing the 6's all day either, but prolly longer than the 280's.
I"m actually looking into both of these as my next purchase along with the Beyerdynamic 770's . Those puppies kick the crap out of both the Sony and the Sennheiser in sound, and comfort. But are a tad more $$ If I had the cash, it would be on the Beyers FO SHO' !
Oh...one more thing. Please don't let asthetics detour you from getting what you think sounds best. Who the hell cares what you look like when you're jammin ? I certainly don't . Asthetics are for sissy boys. Down with conformity !
S.S.