Best machines to buy

I’ve been building and tampering in servers and what not for my home lab for a while now and I’m tired of getting a used machine for free or something and there being small problems with them even though they “work” overall. So I want to start a discussion about the best workstations that are already prebuilt to use for various servers in my home lab. If you list multiple please list pricing ranges with them as well so I don’t spend time looking into a $2k server that I don’t need.