I don't know what all the fuss is about AS5, TBH, it's crap.
- It's electrically conductive, so you have to be pretty careful with it.
- It doesn't come off very easy
- It's quite thick meaning it's harder to spread
- And it doesn't even perform that well! There are much better TIMs out there.
I would recommend OCZ Freeze or Arctic Cooling MX-2, both perform better than AS5.