i havent tested TONS of tires, but i've tested a few. All my review's will be for drifting no grip/daily/wet reviews.
BFG KDW-my fav of all the tires i've used so far, grip is excellent, treadwear is even and smooth, they can deal with high temps, dont chunk, and smoke like mothers. great on front or rear.
Toyo proxes T1-R, 2nd fav, used them on fronts they gripped like hell, wore evenly, rears were just as nice, nice smoke, even wear, great grip, and heat didn't phase em. My sig pic is using these
Falken FK452's, 3rd fav (of tires i've used so far) good smoke, good grip, even wear, wears faster than KDW's though. overall i liked them alot for rears, never used on fronts
Michelin Pilot sports (not PS2's) these tires suck for fronts or rears, chunk like hell, chord really bad, for grip they might be okay but i didnt like them for drift. next to no smoke. if you run the rears backwards (directionally but pointing to the rear) they wear more evenly for some reason. wierd i know, but its just what i've tested.
Bridgestone Potenza RE050a- These tires are a great street tire but once they get a good bit of heat in them they chunk and strip off pretty bad. very little smoke, uneven wear, overall i hate them for drift rear, never used them on front but probably worse.
Nexan N3000- decent tire, cheap price, decent smoke, decent grip, decent tread wear, but get greasy as hell with alot of heat in them. okay for budget drifting or for KA powered cars IMO.
Dunlop FM901 -tried them on fronts only and liked them alot, good grip, not as much as KDW but nice. wore evenly, dont know about smoke and heat etc.
really looking forward to trying out Dunlop Z1 Star specs and/or Nitto NT01's for fronts.