@scottalanmiller to be more precise , i use nutanix in production with AHV and KVM for all the rest , when i drop VMware licensing cost and the endless possibilities of using the vm's in pure opensource environment , i like it . they have their drawback ( try to connect a usb to ine of the servers for instance ...
if you count snapshots usage and price vs vmware and you are familiar with KVM its a win/win ...

consider also Nutanix , i have three different sites with 4 of them each , run very good . not flawless . of course you need to run their AHV software and not vmware as base .