Cross-drilled rotors don't help your braking unless you have crappy pads that out gas a lot, or over heat easily. Good pads like the HPS, or Axxis ultimates, or R4-S won't do that.
Slotting on the other hand has some good points without nearly as many bad. I still won't run them simply b/c they aren't necessary for what I do, and are way more expensive.
And buy OEM quality rotors. I've seen and heard of far to many non oem-spec rotors fail (literally rotor disconnected from the hub). I use G3000 Spec rotors from Cobaltfriction.com. All non contact surfaces are painted high temp black. Never had a problem with them yet on track. Great company, with awesome people who love road racing. Tirerack has a decent deal on plated 300zx rotors. A little more than the g3000 units. Both are under $60 ea.
If you want some really good street pads, Call up carbotech and tell them what your into, and what your looking for, and they will set you up. Awesome guys. I run their pads exclusively at the track.
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