The OP started by mentioning the MiniBrute 2S, which isn't even polyphonic!
So...
The Korg modwave has 32-voice polyphony, with over 200 wavetables, each having up to 64 waveforms. Programs have two oscillators and a sub, and can be layered.
The Korg wavestate has 64 stereo voices, and 4 layers.
The Argon8 is 8-voice polyphonic, with 4 oscillators per voice.
The Cobalt8 is 8-voice polyphonic, with up to 8 oscillators per voice, with a nice analog-style filter or two (31, actually)!
These are all really powerful synths, available in either of the formats that the OP is interested in, and quite capable of creating the sounds that the OP wants, I think, namely:
Must be able to do ‘Moog-like’ bass lines, synth leads, pads etc.
and
Also, would probably prefer a digital model rather than analogue for the multi-timbral and polyphony etc.
Hence my vote would be for the Cobalt, or the modwave. They go places the MiniBrute 2S can only dream about...