I was only with them for six months and after that time they managed to irreversibly destroy everything I had been working on, including the backups I'd paid for. (They said that the backups were on a different server which also happened to catastrophically fail at the same time...)

I want to love MediaTemple, and I agree that their support is excellent, and I accept that terrible accidents happen, but I can never bring myself to use them in a production environment ever again. (The project I was hosting with them was in a sort of private beta, and although I had second backups of the code I had very very foolishly trusted the Snapshot backups with all my user data. Lesson learned.)

Anyway, I'm just one dissenting data point in a giant sea of happy customers. I don't mean to dissuade anyone from using MT--just please don't be any less paranoid about their service than the rest.