Backups: Managed Backup Company, Or DIY With Dedicated Server

We have 2 servers which run our website. One for data (about 50gb) and one for databases (about 5gb)

We currently perform offsite backups but we want to improve upon these. Our main objectives are:

1) Be able to recover as much info as possible in the event of a disaster

2) Be able to rollback to a previous version should we not notice a problem until later (ie 30 day history?)

3) Be able to restore as quickly as possible

4) Be able to afford it!

The options we seem to have are:

A) Use a service such as backupdirect.net which specialise in offsite backup and have specialised software to handle this. Obviously we get support, the backups are encrypted, etc and probably will end up with a much more robust backup solution.

However, it will take time to restore, if our server goes down we still have to get that working then perform the restore

B) Buy another dedicated server, which we can run everything on (albeit slowly!) and keep a 'live backup' on this server. This means we could switch to it should our main servers die for any reason with minimal downtime. Downsites would mean we have less support, would have to be careful with encryption of the data flowing from one server to another and we would have a less formal backup solution (eg harder to restore back to a point in time)