In general they all do the same thing, with very little difference between them, accept for a few brands, that perform better than the rest..
What to look for, a electricity non conductive paste (well they all are more or less, but not hazardous to you HW is what i meant), and a thermal conductivity greater than 5w
Its not all in the watt tho, but as a rule of thumb..
some are heavy silicone based, which can be hard to apply, if you use another method than the universal nap.. So for use on VRMs and stuff like that (or on thermal pads), a heavy silicone based one, can be a pain in the butt to apply, if you are picky, and dont want a mess.. Ok heat it up prior to use.. But still
Tube must look cool and destructive, red if possible, or at least red stripes, or a red cap..
The new school TIMS out there, are good, the old ones, like the AS5 is outperformed, compared to most of the new ones.. The AS5 is a relic from the past, and was good back then, if even..
And Artic isnt getting into my wallet...:cool:
Take you pick... You have already pinned in one of the top notch TIM up there in the OP, i dont think you are going to find a better than, even how hard you look..
Good luck
and a note> Most of the cpu heatsinks. and blocks out here today (accept for the fine H2o ones), got a surface that look like crap, so it really doesn't matter what TIM you use, because you cant compensate for a poor mating, with a top notch paste, just ease the pain a little, but to major gains..