The Joker
Thread Killer MKII
Phoenix Tech stocks the Coollaboratory Liquid Ultra:
LINK
I'm currently using the AS5 and it's kept my temps low, albeit I haven't used any other compound so I can't offer a comparison.
I might just buy one of them to check it out, the problem is the price.
I build machines a lot and I DON'T ever use the stock paste..so it could become quite expensive lol
Might just make use of it on my personal machines.