First of all, I agree with Sean about $12 is $12, I actually just called AMEX to rebate $20 from their best-value guarantee program... 5 minutes phone call for $20, definitely worth the troubles.
Anyway, in the Griot's Garage catalog, they mentioned their PC is a little different than others because theirs don't conduct heat to the pad??? is that true? or is the PC at Lowe's exactly the same as Griot's?
I tend to think that Griot's Garage has the best of everything but they also charge a hefty premium for that "quality guarantee" and the brand. (like more than 2x the price for the Rhino ramps)
--Andrew