I've found MX-3 to be good with roughly a 1CM bead in the middle....most paste I've ever used for any TIM, but it seems to be good when you use that much.

As for Liquid Pro...I have it, I've used it (as seen next to the socket, near the capacitors, on my sample IX mount picture ...damn plunger got stock and I used too much force, board still works fine though), but considering the bonding issue, I can't use it unless I plan to exclude my Swiftech GTZ from my waterblock tests.....I did a quick sample mount with it before I started the real testing and even after a few hours it embedded itself into the base of my GTZ and took about an hour to remove with metal polish. Any sort of extended, multi-mount testing with it would like alter the GTZ near-permanently and make it unusable for my upcoming waterblock tests.