I started on Elitedesk 800 G1s when Raspberry Pis got hard to find and expensive, and I now feel they are better in every respect if you don’t need the GPIO pins.
Every time I open them up to upgrade something I’m impressed with the level of engineering. There are quality manufacturer manuals for them, the cooling is good and they look great
I have something very similar from Lenovo, bought refurbished and it’s a very capable i5 home server. And it’s practically silent.
I tossed up about the Lenovo’s and probably only went with the HP’s 'cause they were cheaper on ebay that week. I quite like how the Lenovo’s look stood up.