Well the PQI has been known to clock well if you follow the OCFourums thread. A couple of months ago when it was going for 185-200 a gig I would have said go for it. But at 250 a gig I say go for OCZ. The good thing about the Rev 2 is if your CPU is FSB limited you can run 2-2-2 timings then you can loosen timings and run hi FSB if the CPU allows. Pretty much I would call it a universal memory!!!
P.S. I have some 3500EB I would be more than happy to trade to you when your memory comes in The bandwidth is awesome with it and it clocks OK but the heat is a pain.