I get really great results using an old Unicolor rotary base and Unicolor or Chromega drums. Will cost you only pennies, and uneven development is not a problem. My 5x7 negs are as even as can be using the same, and I never find myself wanting anything better.
Have you tried film other than Efke?
"Often moments come looking for us". - Robert Frank
"Make good art!" - Neil Gaiman
"...the heart and mind are the true lens of the camera". - Yousuf Karsh