Not sure if you are looking for silent practice (headphones) or a small portable amp w/speaker & fx?
The BR600 is total overkill for practice (funky as it is) and the Korg PX5D is cool (likely a easy fix) - but no speakers. Downside with most small amps is that the small speakers generally mean higher gain tones sound shite - small speakers just don't do that (yet).
Option 1 - play bass. All the tone you'll ever need is in yer fingers 😆
Option 2. Easy playing couch guitar - the pimpocaster lives (unplugged) on the couch - I run a few bits during 'tv time'. Only slightly more vol than a electric so it's mostly for maintaining skills than developing new ones.
Option 3 - Yamaha thr10. Super portable, usable fx, decent sounding on it's own and you can still plug the headphone out ino a pa/power speaker if you wanna use it loud at a jam
Funnily enough, for once I didn't go the Katana route 🥲 THough...the katana mini IS a option. Cleans & light grit tones are good, but the higher gain stuff is pretty ewww.
A easy to use rig more though really does help. I've got two things to turn on (10w practice amp + zoom multifx) = I've got a rig for bass/guitar and for the pimpocaster, I just add in the GR-S pedal. Takes around 5s for bass/guitar and 15s w/pimpocaster to get noisy.
...I do practice bass & pimpocaster unplugged - more often than plugged in. Vice versa for electric guitar, I hardly ever play that unplugged.