Info came from user reviews on Newegg and Amazon, in-depth multi-page product reviews on tech websites, and YouTube build reviews. Because this will be my first build and I've never had to deal with cooling, overclocking, and heat issues, I'm reading everything I can find... but there's been little written about the Pure Base 600 or the Phanteks P600S (too new). Since 1978, every computer I've owned was pre-built. But I'm tired of paying for obsolete components and systems that aren't upgradable.
I know user reviews will drive you crazy. So far, I've spent 3 months just trying to pick a case and Z270 motherboard. At this rate, there's the chance that there will just end up being a pile of unassembled components that will go into my estate.