i have an oppertunity to buy some kumho ecsta supras for $60 each. right now i have the worst tires in the world that were put on by the dealer, and for autox, its not workin to well. so i definately wanna get some new tires, but i duno how good the kumhos are. also the same place has toyo proxes for $85 each. is it worth it to go with those for the extra hundred bucks? these will be used for autox and street. give me some feedback thanks.