is the best ~750W PSU for that case.
160mm long it is small enough not to block the graphics card. Hmm wait that was for phenom.
But anyway, same goes with the Prodigy it seems. 160mm long will fit.
SS-660XP2/SS-760XP2/SS-860XP2 are all the same size at 160mm, so take your pick based on your power needs.
Seasonic quality, 80+ Platinum rated, 7 year warranty. It may cost a bit, but you get what you pay for.