I started with Michelin (MXX3's P0) which came with the car, not bad but nothing special - though they were over half worn. I then tried Bridgestone S02's (P3) which I found very grippy wet or dry - however when pushing on the track I found these to give way with very little feedback or warning once the limit was reached. I also found that they were very soft and wore fast I also had a tread split in the centre and a sidewall cut on pothole - maybe unlucky but never experienced this with any other brand. I Now use Dunlop SP9000's (no P rating) and I have been very impressed (on my second set of rears). They are harder than the S02's so last longer but offer almost as much grip as the S02's in the wet, a bit less in the dry. They also have much 'softer' on limit charecteristics, when they let go they seem to give a few degrees of slip and then hold on - Having a set of trackday tyres now I haven't pushed them over this point so don't know what happens but you would have to be doing something very silly (or planned) to do so.
In the dry when you are taking liberties they squeal to worn you of approaching grip loss providing extra feedback.
At a wet Silverstone (year before last) the Gold Track Instructor asked what tyres I had as he was impressed by the way they held on.
So thats another option/view in the mix.
This was over a four year perieod and 60,000+ miles. I have 17" 225 and 255 car started standard (probably below 250) now is around 330BHP
Tony