Ben, not sure why you think the Praise Dyno rotors are "all that" if they check like that....maybe it's the change in the NBS platform, but I have not found anything that will beat the OEM pads and rotors. I don't take my 2500 burb to the track and don't see ant benefit to slotted or drilled rotors. I used slotted rotors on my 94 SHO because Ford OEM brakes were crap.
I have to say its true, if you buy GM you get two legendary design capabilities, brakes and heat LOL/.