There is a dude on YouTube that did a great review/compare on a lot of the products. His channel is called Project Farm and he does really thorough reviews/comparisons of everything you can imagine. He did one on POR15, Rustoleum etc recently.
Thanks, just looked it up. I'll save everyone else the ~12 minutes... POR 15 for the win in all tests (except cost).
Given how much of the PC on my bumper has been compromised I may just paint the whole thing with POR 15 for now. So... should I get some POR 15 semi-gloss top coat, paint with POR15 and clearcoat with Rustoleum (I have a can already), or just paint it with POR 15 and leave it uncoated?