I used to have one at rackspace.com. Their support is great, but I agree with others, the RaQ's are underpowered. You get a couple of CGI scripts on them and the server really bogs down.
Overall I liked my RaQ and would recommend it for a newby.
We now host with Alabanza (like so many others) and have a pretty decent server. I have more clients and CGI scripts and the CPU rarely goes over .9% whereas the RaQ would be at a constant 30%.