If you have a look at BG7 thread here in AT you will incline toward the BG. I am using BD7II not the RAID one, I must admit this board overclocks real solid and with no hesistation I would go for this one. But be awared that the BD7 is BIOS sensitive, always compare performance and stability when you update the bios. If you don't have issues and not really require the new one just stick with the one that works best, even is it an old bios, in my case I use version 93 not the AJ or AW (these depend on other components in the setup, right?).
Goodluck.
BD7II, 1.6A@169MHz fsb, 2.7GHz, SamsungDDR333