Looking for virtualization solution

Now I'm looking something to replace VMware ESXi... So far I looked at XCP (xen cloud platform). It has issues running OpenIndiana, so it was not a best choice for me. Then I looked at OpenNode. But satisfactory WebUI was available only for latest beta version, and I didn't manage to make it working. Maybe I should look at Aeolus Project? When I return to this task, I'll give it a try. Just for now I'm going to deploy new PostgreSQL server in old proved FreeBSD jailed environment. At least its overhead and complexity is minimal...