Hmm so the T51p actually have more bass than the H6? I think I'd need a portable can by the end of the year, and while the SRH1540 really caught my eyes, its size is what makes me reconsidering them as my 'portable' can.
The problem is, I may be able to get the T51p for about $400 while the H6 would cost me $600! (NZD).
They do...quite a bit more actually. The SRH1540s are more sit-down full sized headphones IMO. Wow, those prices are highway robbery!