The rotors look really nice as stated by others... pictures do not do them justice. Now, as to the stopping power, they seem a little better than the smooth rotors that were on there. But I have only my memory of previous stopping power as a reference, so it's subjective at best.
As to the function. I'm getting some squealing under light braking conditions, even after several 'bedding' sessions (eight cycles of 60-10mph in a row after proper warm up). I suspect that comes from the fact that they were Cryogenically treated and are now MUCH harder than regular rotors and I haven't yet burned through the zinc wash coating. This may take much higher speeds and more heat to burn through properly. Also, the cross drilling and slotting may create more harmonics and increase the chance of squealing.
I suspect that after the track event that they will quiet down, especially with full race pad compound running on them. This should provide the proper 100+mph slowdowns to really heat them up and break through that zinc wash coating. Derek told me that with the smooth stock SRT6 rotors on his, he gets NO squealing at all with full race compound running on them, even when he was still driving it on the street. It only took one track event to make them that way according to Derek.
I will wait and see, if the race compound gets quiet after the event during the drive home, I'll know the rotors are bedded properly. If they begin to squeal after I put the OEM pads back on when I get home, then I'll switch back to the race pads to see if they quiet down again.
Again, I'll post a full update after the track event next weekend.
Cheers!