We now have the MozyPro (online backups by EMC) reseller account up and running and have a couple of servers and a desktop using it now – and looks good.
Personally I’ve used Mozy for a while now and found it very good.
Need to perform some test restores now of SQL and Exchange to see how well that works once the initial backups are completed. If you’re interested – take a look around our site and see how we can manage a Mozy installation for you.