Unlike @farkas I almost never sell anything (I probably should cause I'm actually running out of space) so take my perspective with a grain of salt, but given how complex your tunes often are, I say keep em all for awhile and see if they can complement each other. TM for sure can keep holding its own, not sure how many quantizers Marbles has but Tune could be used for key switching or things of that nature.
my tunes: https://stevehand.bandcamp.com/