Different OS - lower price for OS licensing etc.
Prices of dedicated servers are going down, so I think we'll be changing provider in few months. Last configuration change surely wasn't as smooth as I wanted it to be, but it wasn't the worst one either. Several crashes with <10min rollback aren't a catastrophe, the real problem would be if they would continue for days, or if the server was down for longer time, but that's really not an option as I always have a backup server ready to go.
Anyway, for now there are more important things to be done (updates).