Have you looked into Carvin Micro Bass Amps? I have a Carvin MB10 (200 Watts and 1x10 speaker) for practice. If you add a second cab it brings it up to 250 watts. I also have a Carvin MB15 that is 200 watts and 1x15 speaker. It's louder than the MB10. It moves a little more air. I have an external Carvin 1x15 cab that brings both amps up to 250 watts. I'm 63 so the Micro bass amps are a real plus. The MB10 only weighs 23 lbs and the MB15 weighs 32 lbs. The external extension cab weighs in at 30 lbs. Even an old geezer like me can handle them with ease.
I'm in Ireland, so getting carvin could be tricky. I have a Peavy and Fender distributor near me. Cool gear but It's all heavy, and as expensive as comparative lighter gear. The MB prefix is used by a bunch of companies, including Carvin, GK, and obviously Mark Bass. I've heard the GK mb combos get a lot of love, and Carvin, like Peavy, are great value and quality for the money (carvin being a bit lighter though). I Like the simplicity of a combo, but I want the flexibility of being able to change heads / cabs without replacing the lot. Also Barefaced don't make combo's!

Thanks for the advice though. When I have a rig I like, I might consider upgrading my combo for quieter practice. I have GAS for a PJB briefcase amp. The bass-buddy is a very cool idea.
Let's step back a bit here!
Going from a small practice amp right into a micro rig is akin to going from childhood straight into middle age, without all the stuff that makes us men (and women), you know what i mean!

Where's the schlepping a huge, macho amp rig up and down three flights of stairs, day in and day out, to grow hair on your arms, etc.?
LOOOL!!!
If you're like me, a fairly lightly built guy who's no stranger to manual work... you appreciate the value of your back. The suffering you can cause is hard to fathom. I've never messed myself up, but I've seen some very strong ladies and gents (both stonger than me!) cause injury to themselves by bad habits (harsh exercise with improper warmups, lifting with back & legs rather than legs alone, etc.). I like the Idea of a mega rig... but mega in sound, not in size or weight if I can help it!
I can't afford roadies, and even the 16 kg combo is a pain to carry up lots of stairs with two other bags...
This micro rig will probably be the same weight if not slightly lighter than that. Not that 25 or 30 kg would be undoable... I'd be far less stable in tight landings etc. esp. after carrying it for a while, like after a 15 - 20 minute walk...

The form factor is a massive deal too. The awkward form of a 410 or such is a massive pain through domestic space. Fine with a coaster-ed roadcase in a purpose built / adapted load-in space at a really good venue.... and that's not likely to be my situation in the immediate future!
I'd love to have 2 215's I could stack 8 feet high, with a 75kg monster tube amp running at 1000W RMS... But it'd be impractical... for the minute. I have a concept of an amp that uses 'questionable' case graphics and suggestive animatronics to delight and amaze. Probably be illegal though...
Like this but more... suggestive. T'would be perfect for a traditional country and westen ensemble. with washtub bass.