I am wondering if anyone has thrown both of these using the same drilling and the same surface. They use the same coverstock and the core RG and differential are almost identical in the two. So, it seems like the only significant difference in the two (other than the color/name, of course) would be the factory surface preparation (1500 polish vs 4000). I am not insinuating this is a bad thing by any means, for it seems that factory surface preparation is often better than what I can achieve on my own. I am just curious.