Whilst it's free, which is nice of course! IMO it is rubbish, it's slow, stupid UI, feature-less and it's slow again.
VMware is far better, it's FAST, save movies, Dual CPU support [can't remember if VPC has that]. "Snapshots" so no need to reinstall anything, just revert to the snapshot, a far greater UI oh and it's fast. I use the Workstation version but there is a free Server one. Plus VMware can open VPC's ;-)
A cheaper version is Parallels, which I don't use on Windows although I use it on my Mac and that is faster than Vmware IMO. [Well my Mac has a better spec than my PC].
But try VMware and you'll see how slow VPC is.