What control panel do you install on your server?

Either you install it yourself or it comes installed on the server you rent/purchase, what control panel do you guys use for your servers? (if any, of course.. I know some of you think control panels are a waste of resources).

I use both cPanel and Plesk on the servers I currently use.

On a VPS I used years ago, I had Kloxo on it. I can't really remember it too clearly though.

So how about you guys? Please provide feedback of your control panels too. Thanks!
I use WHM/cPanel as they are more reliable and easy to use for managing my hosting accounts and services.