STS is the best IMHO. It keeps you from doing the expensive intrusive things like LSDs, but let's you bolt on stuff as the season progresses. If I had to do it all over again, I would have skipped GS and went to STS; I swapped to Konis last year, and put on H&R's and a camber kit this year. Knowing now what a difference that meant, I would have bit the bullet and did it at the same time. Now, I can leisurely add a bigger sway bar, strut braces, intake options, etc.
Going to ESP puts you against prepped V8 Mustangs, Camaros and Turbo Supras. Yikes.
