As a follower of Chairman Yang, I also use clean almost exclusively. I tend to field large armies and need all the help I can get. Clean, paired with something else.
But if there is a situation where I need a specialist unit, I'll usually drop 'Clean' and tailor a new unit to solve my "problem".
(Whomever hasn't figured that you are a Morganite.....well, that's not very observant... )