I personally feel that
OpenForce probably offers the highest quality OpenACS hosting on the market. Unless something has changed lately, they do
application level managed hosting at a tier 1 provider.
Civilution (the company I am a part of) offers OpenACS hosting and support for it's clients.
I believe Furfly offers a sandbox type OpenACS hosting for developers. (someone please correct me if that is an inaccurate description)
As for the Cobalt RaQ servers, I think they are pretty much designed around Apache and to try to use them for something else is probably a mistake.
