I had a Randall RG200G3 a while back. I really liked the amp, but the distortion was a *little* lacking for me (:D). Anyway, I wouldn't have got rid of it, but for a couple of reliability issues, so I got a used Peavey 5150-II with a 5150 cab.
I can THOROUGHLY recommend the 5150-II (or 5150 if cleans/separate EQ aren't as important to you!).
The new version of the 5150 is the 6505. They are identical.
The new version of the 5150-II is the 6505+, these are also identical.
Very, very, very good amp :)
Roo