Unless you plan to o/c, the XP2000+ deal is better for $10 extra... the best was when they had XP2000+ Retail combo.
I am almost sure that the XP1800+ is TBred-A since Fry's buy in such big bulk when it comes to CPUs. So for o/c between AROIA and TBred-A, I do not is much different if any. Also, K7S5A does nto have much option to o/c.
So, 1667 vs 1533 for $10.
BTW, does anyone know if any of the Fry's have the K7S5A-Pro in yet?