I like getting Bee-link boxes - they can be upgraded to 64gb RAM, have plenty of CPU, and can have two drives. I run Proxmox on them and make VMs that then run my services in docker.
There’s been a lot of talk about N100s as well. I haven’t looked into them much, but I assume they should be similar. Looks like their max memory is 16gb. I’d stick with Bee-link.