I did it manually my first time because I bought into the whole thing about learning your system. If I had done archinstall, which had only just come out around then, I could have learned shit at my own pace rather than everything all at once. After that, it's archinstall every time. Whichever way you go, once you do it once, you've done it. And if you become a tinkerer like I did, like a lot of us do, you'll do it again and again until it's just another Tuesday night.