I disagree that T1 beats HE-500 in everything, but bass. That's not true at all IMO. Firstly, look at the measurements for both - objectively, HE-500 is actually the better headphone. T1 has very apparent ringing, while HE-500 is much cleaner. Whether that's audible or not, is a different question, but the fact is that HE-500 measures cleaner than T1. Secondly, I think that HE-500 can easily match, if not surpass T1 in clarity, tonality, transient response, resolution and almost everything else actually, except for soundstage dimensionality and maybe imaging. I love the sound of both, but I do think T1 is overpriced compared to HE-500, as it's not better overall and yet costs significantly more.
Maybe so, although price wies the T1 is just a T90 with less treble lol