Thermal Pad/Paste recommendations

[ShikuTeshi]

I got a Strix 3090 from LTT (thanks for the system) and thought the GDDR6X temperatures would really only be high in very heavy VRAM workloads.
I'm currently idling in a game with the GPU at <75c but the VRAM at 88c with HWinfo reporting that the card is in throttling mode.

I'm personally uncomfortable with any of my components going over 75c so I'm now considering doing a thermal pad replacement. But that's one of the areas of tech I never took a look at so I have no clue what brands would perform well.
I've seen varying results of people getting anywhere from 10-20c improvements. One user reported getting a 30c improvement.
So far I have heard of Thermalright, Arctic, and Thermal grizzly being used for such a thing.

I haven't seen any head to head comparisons (LTT video please?) but would probably like to know what's been used and what sort of decrease in temperature did it provide?

[m9x3mos]

On my 3090 fe I used thermalright odyssey pads while waiting for my water block. Mine dropped about 20 - 25 c with those. 

I also used arctic on a 2080 founders and they worked great. 

The watts per meter kelvin is the measure of their performance. The higher the better. 

[ShikuTeshi]

Forgot I need to expand on this and get thermal paste suggestions as well. I imagine GPU's, especially a 3090, run much hotter than a CPU and would need to know of a paste that can be used in such a workload without drying out and cracking.