Not worth using it on a IHS. Difficult to remove, requires some time to spread ( you have to do it manually ), expensive, small improvements over high tier "normal" thermal greases, risk of short circuit if spilled on something and it literally ( almost ) EATS aluminium.
Gelid GC Extreme, AC MX4, Noctua NT H1, Thermalright CF3, Prolimatech PK1-2-3... very good options. Tom's hardware did a very good review of many thermal compunds, don't know if I can link it.