I will install proxmox or esxi with pfsense

Proxmox VE is a complete open-source platform for enterprise virtualization. With the built-in web interface you can easily manage VMs and containers, software-defined storage and networking, high-availability clustering, and multiple out-of-the-box tools on a single solution.

What ESXi Delivers

IT teams are under constant pressure to meet fluctuating market trends and heightened customer demands. At the same time, they must stretch IT resources to accommodate increasingly complex projects. Fortunately, ESXi formerly known as ESX helps balance the need for both better business outcomes and IT savings. VMware ESXi enables you to:

• Consolidate hardware for higher capacity utilization.
• Increase performance for a competitive edge.
• Streamline IT administration through centralized management.
• Reduce CapEx and OpEx.
• Minimize hardware resources needed to run the hypervisor, meaning greater efficiency.