PCTC2
Diamond Member
Not really sure why exactly but personally i've been preferring Xen server over Esxi recently. Well for home machines and screwing around at work anyway.
I'd also give that a try along with esxi
I forgot about Citrix XenServer. I used it for a few months before it stopped responding to the control program one day. It's a great program. As with ESXi, you need supported hardware. It gives you a little more ability when it comes to the local console, but the Windows client for both is pretty decent. Both are available for free. So try them both!