I see you're a sawhead as am I. There's a new website called BBAM (pronounced: Ba-Bam),
http://www.bowlingballsandmore.com . It's a bowling community website and there is a lot of info already there and more is being added everyday.
By the way, I shot 739 with my Cobalt Solid last week. I love both of the Cobalts. Also had a 277 game with my XXXL plastic in another house the same week. Nothing hits like a buzzsaw.