Home VM machine - new PC or old server?

I would like one machine to host 4 light (home) duty VMs. I have a short rack (can’t mount a full length rack machine).

Should I build another i7 machine? Or should I buy an older Xeon server? Let’s assume graphics are not a concern. Just serving files, streaming the occasional movie or music, and ruining a couple of experiments.

Then, if I want one machine both my wife and I would remote into for light Autodesk or Adobe software work, would that change the answer?

Thanks for your feedback. I want to spend less than $1,000 on this.

I’d buy a on sale Ryzen CPU, they support ECC if you care about that, could support up to 64GB of RAM and you get plenty of cores for the cost.