Yoks are great, I'm sure you'll be happy. My brother has ES-100s on his Z TT, and loves them. Quiet and sticky, a great combo.
I just got new tires yesterday. YIPEE!! I needed them so bad.
I went with BFG KDW-2's, also purchased from the tirerack.
255/40ZR17 out back (heh, heh)
They are wicked lookin, have unbelievable grip, and have an excellent wet weather rating for an ultra high performance tire. They even have a tread wear rating that might lead to me getting 25K miles out of them, which is unheard of for an ultra high performance tire. My only complaint is that they are a bit noisy above 80mph, but I'm hoping that might wear off after a few thousand miles. Great value though, at this point, I would definitely recomend them.
It was between these and the Pirelli P-Zero system, and honestly, I just couldn't justify the extra cash for those, considering they have a tread wear rating of 140 (probably less than 12K miles out of them). I also had two guys at the tirerack say don't by them, their not worth it. On a side note, the two guys were Bruno and Vinnie. Is the tirerack run by the mob? :P read more here