Favorite OS for your VPSes?

[Supicioso]

It is an actual OS made especially for "Cloud". It is used as the hypervisor. Provides zones (which is same as OpenVZ but since it's Solaris-like, it only support Solaris) and KVM. So you can run KVM on SmartOS. We delayed our KVM on CentOS products to take a look at this instead.

Interesting, I might try this on a test server and see if I like it.I assume it's a viable method on production servers?