Imho, for the vast vast vast majority of people, you should pick the lowest management solution for a long running home server. In an ideal world every home appliance is like an oven, something that always works, cleans itself, and requires no obligations of you the owner. Of course some things don’t work like that, knives need sharpening, cast iron pans need seasoning, wood cutting boards need oiling, but when it comes to home server software it’s entirely possible to design it so that it’s more like an oven, updating itself, always running, and never requiring anything of you the owner other than keeping it plugged in. That’s what HAOS is, and I would rather buy more Pis / old laptops and just run them side by side rather than deal with a whole extra management layer and critically timed updates and stuff.