Actually not true that any Bauer will work for his purpose. The Bauer junior isn’t rated for continuous use filling a bank which is what he asked about. Most of the other Bauer’s are though, such as the ones you named. I have a Utilus 10 from Bauer, also not rated for continuous use. I looked for a year without luck before finding mine.
Have no doubt there are easily found "things of beauty" for sale in Florida and easy access to a "compressor guy". Could be true in other coastal diving hotspots as well for that matter. I question if the same is true for the OP in Ohio. Buying a used compressor of this size sight unseen from out of state may not be the slam dunk either.