I'm new to using forums in general so bear with me

I recently acquired the following synths/drum machines:
Roland TR 808, Tr 909, TB 303, MC 202, MC-300, and a Korg MS-20 with a Kenton Pro MkII.
New to making music in general, but I have learned to use each piece of gear and have begun recording single-take sessions on an old cassette recorder.
Currently considering two different tabletop synths:
the dave smith evolver, or the elektron monomachine.
The MC-300 doesn't seem to be the best "jamming" sequencer on earth. How's the monomachine's sequencer? Would It be a better master for the MS-20 in a live programming situation?
The monomachine's over three times the price of an evolver.
Do the advantages of the monomachine justify this added price?
Which do you think would compliment my gear better?