I'm biased toward Media Composer as I've been using it for over 20 years. Have had mixed experiences with Premiere.
But my experience is that even quite low-powered computers are completely fine for the edit process because of the rock-solid media management and codecs, particularly with a lot of RAM like you have.
I do use After Effects for compositing and graphics though, and Avid is a bit clunky with multi-layered stuff.
If you're doing a lot of that kind of thing Premiere may be more suitable, but personally I'll stick with Avid every time.
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This statement is 100% false.
100% false is a bit harsh, but perhaps I expressed myself poorly.
NVIDIA provides significantly better performance than AMD in Adobe products, particularly in Premiere and AE. Avid partner with AMD in development, so there is strong integration there.