I've had a monomachine for a few years now, really like it, it covers a lot of different sounds but it lacks in two departments: bass and poly. you could fake poly if you put it in multi mode and run all six channels at once on the same patch, but that limits you from using other sounds at the same time. to resolve the bass issue I picked up a Moog minitaur, which I'm loving (though I've only had it a couple days). the monomachine sequences everything so i can play guitar/tweak effects at the same time.
currently, I'm fairly happy with just using the monomachine & minitaur, but there are times where it would be nice to be able to do chords and fill out the sound a bit. I don't have anything in mind right now that absolutely needs poly, and I may be able to work around it if something came up, but in the back of my head it still seems like it could turn out to be a hinderance
while I do have a venom, which is a poly synth, I really only use it as a controller while I'm writing and sequencing, the sounds are ok but nothing essential, and its a bit big. long term I just want to have a few small desktop modules that would be really portable, small footprint, and I can all sequence off of the monomachine
so could you work with only a mono synth or two? or would you consider a poly synth of some sort a must have?