I've just bought a 1200w Asus ROG THOR because it is a rebadged Seasonic, and in my opinion it is Seasonic or nothing. Is it overkill for my needs, possibly. Should I have waited for a ATX 3.0, maybe. Considering all the fire hazard concerns (which is why I believe not many brands have released them yet) and AMD ignoring the new connector this generation, I think I'll wait until they're confirmed safe. And, been adopted more mainstream.
All that said, to mirror others I wouldn't be risking my other components with an old, unknown psu. If it lacks the necessary protections, when it goes pop, it's likely to kill the rest of your system. Don't skimp out, get yourself the absolute best you can afford and it will be with you for the next 10 years.