We ha e tester proxmox for a while, and thinking of switch into virtualized world from tradizional one. We are a small office (15 user) and the server sgola host some vm (3CX for voip, Nextcloud for file sharing, Windows server for domain, pfsense for vpn) the host running pve will be and ryzen 5950x with 128gb ecc ram running in nvme 480gb. For storage i can buy hdd or ssd but stil in doubt about filessytem. For us is better lvm-thin or zfs?