I have been with Reflected now for over 2 years.
ZERO downtime, ZERO.
I rebooted a server once remotely, and before the server even came back up, my cell phone was ringing, it was reflected.
Last night, we ran out of hd space on one of our servers. BEFORE we even knew it, Reflected was already about 80% done with installing another drive on that box.
http://www.reflected.net LOVE THEM!