I would get whatever blank rotor you want. Adnie at Cobalt has some that are decently priced and do well on track and off.

I WHOLE HEARTEDLY agree with Daniel about the Cobalt GT Sport. For street/Auto-x this is THE pad to have IMO. I have a set on my R currently. Ultimates are not nearly aggressive enough. Cobalts are pretty affordable and Andie is a great retailer.