We use Rackspace for Paragent.com. They are a little more expensive, but they handle all the os-level patching, backup, etc. We basically just worry about the a

We use Rackspace for Paragent.com. They are a little more expensive, but they handle all the os-level patching, backup, etc. We basically just worry about the application. It lets us focus on the aspects of the business we are best suited to handle, and leave the os-level management to people that devote a lot more resources.