I used to have an Orange Rockerverb 50. Overall really nice amp. The amp had plenty of gain for classic metal, but even boosted seemed a bit short of modern metal. I just play classic metal, so keep that in mind. It just didn't have the brutalz like a Recto, Engl Fireball, or 5150. The Clean on the RV50 was pretty good, its the weakest point of the amp. Overall the amp sounded like a dark compressed Vox. What I loved about the gain channel on the RV50 was the range, of the knob, it went from overdrive to distoriton, not just drive to too much drive like you get on alot of amps. I would give the gain channel on the RV50 an A- and the clean a C- if assigning a letter grade.
Also because the Orange Rockerverb 50 is pretty dark, I didn't feel it cut through the mix as well as the Fender SF Bassman or Vox AC30CC1 I used with the same band.