Hi Mike,
We used Oak Park way back in the day, but unfortunately we were a "guest" user as we had a freebie from them. This made support from them difficult because we didn't have the correct customer profile and so on.
Recently I've been using Rackspace
http://www.rackspacecloud.com/1220.html (*)
and so far it's been outstanding. The only thing I had to do to get going was uninstall IIS, and set the firewall to allow the Web Server program.
(*) The link here is affiliate link, which we got because we were on the Windows beta test for Rackspace. If you use this link I make, well very little, but hey every little bit helps.
Cheers
Bruce