The Frap Tools Usta sequencer would work great with the voices you have.
And it's beautifully crafted hardware. Just a gem.
For me though, fixed step sequencers can get boring after a while.
NerdSeq can do everything, if you manage to figure it out. Don't know if I ever will.
If you want unique/musical/odd/depth, Eventide Misha does really fun things driving a three voice system.
noodlehut.bandcamp.com