+1 on Minitaur. I was looking for a gig-friendly companion to the Analog Keys and chose the MT because it’s tiny, CV controlled, and has presets. Generally you can only find 2 of those in combination. (e.g DSI Mopho, Arturia Microbrute, SE Boomstar, Doepfer Dark Energy, Grendel Grenadier, Waldorf Rocket/Pulse 2…but the Pulse+ is a good used suggestion!)
Yes, it’s “limited”, but another way of looking at “limited” is “focused” or “specialized”. It does what it does very, very well.
You can get higher sounds beyond the technical limit by self-oscillating the filter.
And if you want a waveform it can’t generate on its own, route a wave into it via the external audio input. Granted, this last part works better with the AK than the A4. due to the availability of individual outputs.
There’s not a whole lot out there that is both CV-controlled and has presets. Slim Phatty is an option. I was also looking hard at the MFB Dominion X (apparently discontinued, get the remaining units while you can) and the Hypersynth Xenophone. But neither of those inspired me bass-wise as much as the Minitaur, and they are roughly twice the price.
If I were open to options with keyboards, I would have gone for the Moog Sub 37.