I've used seedroots two times now, one for seedbox a while ago(3 months back) and now for backups and vpn.
The first time I never requested seedroots to transfer the server into my Manager(as I didn't have a managerv3 account), this time I did. The server was setup within 1 hour and it was transferred to my account.
The support is very good, common grammar mistakes though. My first ticket got a reply within 5 minutes, the final ticket I had got a reply within 8 minutes, so its very well watched.
The server itself is Kimsufi server, I'll do another review for that later on, but Seedroots is a very good place, very fast and they're friendly people.