It'll be interesting to see
I just got done migrating from free ESXi to paid-for Server Essentials - I at least get someone to call when the servers go titsup (and they haven't, inshallah, ever since running VMWare Server 2 many moons ago). The next hedge is to investigate some flavor of openstack. Not because I dislike VMWare, but because our next logical step with VMWare costs five figures (Essentials cost us $500), and that buys a lot of time playing around with the competition. I'm licensed to upgrade to 6 but I'm in no rush to do so.
