I'm not an electrical engineer or an industry expert like johnnyguru. However, I have been doing a LOT of research the past three months in preparation for putting together a new system. My computer is my only source of income so I need reliability much more than peak performance in most parts, although in a PSU they tend to go hand in hand. I enjoy the research, and I only upgrade on average every 7-8 years, so I want to get this right. The only parts I have ever had fail after the first 3 or 4 days are an off-brand M.2 drive, which was a nuisance since it had my OS on it, and a cheap power supply, which completely downed my system for two days. I was living in China and despite that being where they are all made, it took a lot of searching to find a replacement that was not utter crap. (I ended up with an FSP, by the way.) I learned my lesson and have put particular emphasis on the power supply since then (2005). I'm also on a pretty tight budget right now. Having said all that, if the Corsair RMx line was available in the country I currently live in, I would have been able to stop my research on power supplies a lot sooner. It would be my personal pick--in my case, an RM550x, since I don't need a lot of power. As for being a dated design, it is not. I did not realize it come out in 2015, but if it did it was certainly near state of the art, design-wise, at that time. PSUs are not like GPUs or CPUs. There is no continual advancement in the technology, at least at the high end. As long as a brand does not sit idle on its reptation and let quality go to hell due to poor oversight or cost cutting, a top quality design from 2015 is still a top quality unit in 2020.