i dont think many people on here are going to be able to give you the info your looking for when it comes to performance handling.

on the street, the OMNI STREETs are great, good ride, no issues. the sports were way to stiff for my street car an i couldnt stand them.

My GF has Tein RAs and she loves them (not basics) and she competes in NASA with her ITR.

i think youll find that most people are running the Omni Streets for a street an OCCASIONAL auto-x session. if you plan on competing alot more, then i would run the Konis and GC setup as most people love those, although the ride is a bit harsh