I'm going to throw out a pedalboard right kinda like an HX Stomp and a Duncan Powerstage. Depends on how budget-friendly you want too. It's certainly not Katana-cheap, but it's also certainly better-sounding than a Katana given you plug it into a good cab.
Also someone before was mentioning a Blues Junior or a Vox AC or a Tiny Terror, and while those are indeed great solid amps, if you want to gig them, I don't find they're THAT versatile. Turned up to gig volumes, it's kinda hard to get them pristine clean. They also don't really do heavy tones either all that well turned up that loud. They're great Rock amps when you want that "small amp about to explode" sound, but that's a bit more of a niche sound, I find. Maybe "niche" is an exaggeration, because they do cover some wide range in the middle-of-the-road drive tones, but like I said, no pristine cleans or not tight thunderous wall-of-sound either.
I will say, though, I used to play in an experimental-ish sorta psychedelic rock band for a while, and the guitarist preferred using his Blues Junior most of the time over his Rockerverb 50 half-stack.
