VMWare on Windows and Parallels on Mac are intended to run on desktops.
Proxmox VE is inteded to run on (clusters of) servers, more like VMWare ESXi or Citrix XenServer.
You can use the full version of Proxmox VE for free and it is compatible with many machines because of the underlying Debian Linux.
I/O is probably faster, but (3D) graphics is probably slower, so it depends on what you intend to use it for.
My personal opinion is that it is substantially better, but please install it and test it for your specific use case(s).