We currently have a dedicated server with Rackspace, and they've been
been great for 5 years now.
But they are SO expensive!
We're looking into GoDaddy's dedicated hosting, and they're 1/3 to
half as much but with even more features.
They have a basic external hardware firewall, Rackspace you pay
through the nose for.
They do their own full backups (restore in case of hardware failure
only) plus a very inexpensive backup server for us to use, Rackspace
has no in-case-of-hardware-fail backup and the optional backup is very
expensive.
Things like that. Full root access in both. GoDaddy uses CentOS, but
that's basically RHEL which is what Rackspace uses.

Anyway, we're very tempted, it would save us literally thousands of
dollars a year--but we need some opinions of people who may have used
or reviewed them.
Any feedback appreciated!

-Liam