hmm brand wise, i would go an exedy clutch, they make all kinds and top market stuff. Also the member Dangerous Davo has a good clutch speak to him on the specs, but it is a good one ask him about it.
But exedy make button clutches with no play and high handling and also they just released on the still has the play but handles high power rates...it is a heavy duty ceramic, but i dont believe it is a button. I will look tomorrow when i am at work. Can get a look at others if i member as well.
Also are you still running the stock flywheel and pressure plate? if you are you should be looking to change them as well.