I have 2 Markbass Mini CMD 121P combos... an Italian one with the class A/B head and B&C speaker (2011), and an Indonesian one with the class D head and Yellow Line speaker (2019). There's an undeniable difference between the 2. The Italian combo can get a lot louder without farting out and it has an all around fatter, punchier tone than the Indo. The Indo isn't a bad amp by any means, but I much prefer the Italian one. The Italian is also 30 lbs., while the Indo weighs 26 lbs. I actually bought the Indo one first, and then just happened to find a great deal on the Italian that I couldn't pass up, so I'm going to sell the Indo one now. Someone will still be very happy with it, as I was before I heard the difference. But now that I know, I know.
I also have an Italian Jeff Berlin 151P combo, with the Class A/B head and B&C driver (2012), which I got in-between my 2 121Ps. I thought it sounded so much better than the Indo 121P just because it's a bigger speaker/bigger cab, but now I believe it's also because it has the class A/B head and the B&C driver. This JB is the loudest, punchiest, best sounding bass combo I've ever played in my life. It weighs a solid 50 lbs. compared to the newer Indo JB combos at ~39 lbs., but if the newer JBs are anything like my Indo 121P sound-wise, that extra 11 lbs. is worth it! I put removable caster wheels on the JB and I love it even more now because it's not terribly heavy at 50 lbs. (I played a 100 lb. SWR 4x10 for 15 years in the '90s/00s), but wheeling it around is sure nice. And I pop the 2 rear casters out and leave the front 2 in while playing, which gives it a perfect tilt to get the sound up closer to my ears rather than my knees. It's really the perfect "bar gig" amp IMO. It'll fill a medium size music venue or a large bar with no PA support no problem. For smaller rooms, dives and rehearsals, the 121P is perfect. For large halls and outdoor stages, the JB would be fine with PA support, but I usually bring my 2 Aguilar SL-112s and Peavey MiniMax for the bigger stages. I've played practically everything over the years and I have zero amp GAS now.