NVIDIA or Intel Math Libraries - which do people like more? Discussion

I’ve been on this email list from Intel, ever since I inquired about something ages ago that I can’t even remember.

They’ve been marketing their proprietary libraries over those of competitors.

With the virus being an issue, I’ve been curious about playing around with these. Since it looks like so many of them are redundant with each other, but hardware specific (Phi vs NVIDIA, and others) etc.

I’m curious who, if anyone, has worked with these and when you would recommend one group over another?