Well I didn't actually spend any money on it. I traded some parts with another OCN member for a GPU that already had the cooler installed. I've been wanting to replace the TIM on the 7850 for a little while, and finally found an excuse to do it.

On a side note. I swapped back to the stock 7850 cooler for a second time, to do some benching with new TIM (AS5) and it was okay. At first it never went above 60*C in Furmark @ 1.22v... Then I realized the PowerLi was at 0%. Raising that to +20% caused temps to rocket up to the 70's with in seconds. After roughly 5 minutes of Fur the temps were around 77*C with the fans blazing at 100%.
80*C isn't too bad for that amount of voltage, but I wouldn't run it like that 24/7. Swapping back to the AC TT II and temps never went above 60*C w/ PowerLi at +20%. Its a very good cooler to say the least.