Diffs are small for the added cost. If you can handle flashing the BIOS and o/c'ing the Rad9500PRO achieves Rad9700 perf while the Rad9700 achieves Rad9700PRO perf ... no point getting the top chip esp with the FX & 9800 street release so close! All brands are virtually identical for the Rad9500 & up so price and bundle should be by FAR your top priorities.