In the late 90s, I leased Cobalt RAQ servers from RackSpace. During this time, RackSpace had exceptional customer service. I could call support and be connected with a skilled Unix SysAdmin within minutes. Even though I was responsible for the entire system, the would happily login to the system and advise me how how to deal with any issues.

After about 5 years, I called to shutdown my last Cobalt server. A week later, they called to ask if they could ship me server. No Cost

Turns out it was the last of the Colbalt RAQs and the oldest server in their fleet