For the best price/performance ratio i would buy the Thermolab BARAM for $40. It is about the same price, but with much better performance. Actually frosty tech rates it as the number 2 heatsink out there.
This cooler is pretty small as well so i dont think you need to worry about it blocking ram slots.
AS5 helps a bit, but its only going to drop your temps by ~3-5c. If i were you i would buy the as5 just in case you need to re-seat your cooler, but the cooler traditionally comes with enough thermal paste to last you 2-3 times.
You might want to try the Akasa Nero. I've just ordered it as based on the Frosty Tech charts it seems to have the best cooling:noise ratio at a decent price. I haven't tried it yet though, so read some reviews etc. I was going to get the 212+ but the Nero is 8bB quieter for just over a degree temp increase...
i ahve a phenom 2 720 overclocked to 3.6 and my temps are great with this heatsink and it will be about 30 includding shipping
my temps were 26c idle and aroudn 35c load all you need to do is get a second fan for it its big tho but its great and cheap its compared to the v8 good luck on yoru search wanna know more pm me