I can recommend suggest the Akasa Nero to i7 users. I am running one on my 920 and getting 85c load now with 120mm fan @ 1800rpm and i know i did a half-arsed job with the AS5. Vcore @ 1.35. It's a good easy to install heatsink and the heatpipes are in direct contact with the CPU as they run under the base.
Not sure if it's as good as the V8 but if you can't find one and this is available then i can safely say it works well
Not sure if it's as good as the V8 but if you can't find one and this is available then i can safely say it works well