I use an old Sony NEX-5T (+Leica BEOON, EL-Nikkor 50mm f/2.8 enlarging lens). One advantage I can think of over a comparable Fuji X series APS-C camera is the tilting screen. For longer digitizing sessions, it's nice not having to crane my neck to look straight down at the LCD screen.
My NEX-5T is 16MP, and I lose a little bit of resolution because it doesn't fill the entire frame. If you need/want more resolution, you can substitute for a newer Sony axxxx. I think the latest and greatest a6500 is 24MP. So far, 16MP has been sufficient for my needs, digitizing 135 and 120 (stitched) up to 6x7. Most of the black and white photos on my Flickr are digitized with the NEX-5T setup, so you can judge for yourself the results. With the exception of some bleached FP-100c peel-apart negatives, most of my film digitizing is with black & white film. Thus far, I've been sending color film to a lab for processing and scanning. However, I'm considering taking everything including developing "in-house", and using Negative Lab Pro for the conversions.