I have this one, had it for 3 weeks now. It's been pretty great (have only used it with PLA so far).

edit: added link because reasons https://www.amazon.com/Magnetic-Flexible-235x235mm-Frosted-Surface/dp/B098T96S1V

I use this one

It's been great on my first printer, just picked up a couple more this morning for the next 2 printers!