It depends on what your application is and how much you want to spend. For serious road race/auto cross, then the Kumho ECSTA V710's are about as good as it gets, and have the price tag to go with it. For something a little cheaper and still high performance for street use, then Yokohama Parada Spec-2's might be a better choice. You only need to get all 4 corners if you plan on turning/handling good. If all you're looking for is straight line performance(drag racing) then a more pocket freindly option is to spend a lot of money on the front tires and then buy cheapo tires for the rear, since they don't necessarily affect the outcome of the race on FWD cars.