InMotion Hosting, Inc.

I purchased a VPS hosting account to host client websites. Their product is great, but their service is absolutely out of this world amazing. The migration across was seamless (all 25+ sites) - quick and without a hitch. I'm not a sys admin, but I don't need to be - I've had a few teething problems, but they have always been there 24/7. If you don't use them, you are making a mistake.