I was bitterly disappointed with the P5. I'm far from a treble teak, but the P5 was just WAAAY too dark. I prefer the T50p, but as Duncan put quite well, there is a strange coloration to them that sometimes I completely forget about, but sometimes I can't. I liked the HD25-II a lot when I had them, except for the comfort, which I thought was much too vice-like.
Sadly, the perfect $300 portable headphone has yet to avail itself, at least to me...
completely agree on that
the only thing I wasn't dissapointed about, was the looks of the p5, that thing is beautiful. I tried to love the sound, I really tried, but I just can't. Too dark, too slow, reminded me of the sound of my B&W 603 speakers and frankly, that's not a good thing.
Also agree on that coloration the t50's have, sometimes I'm very aware of that, sometimes not. Although the perfect top range portable doesn't exist probably, I wouldn't want to miss the t50's anymore, they have something special going on that I want to have available to me.
p5's are gone, going to sell or trade for ES10/ESW10.