Honestly I don't think you can go wrong with either one of them. I have the Fender Champion 40 and I love it. I don't have a Blackstar Debut 50r amp but I do have a Blackstar Fly 3 and I can tell you Blackstar makes quality amps. The Fender Champion meets and exceeds my needs for a good, dependable practice/gigging amp with several amp voicings and effects to use. Is it loud...oh yeah. Go to a guitar/music store where they sell them both and try them out. You will favor one over the other. Again you can't go wrong with either amp.