Is your main issue lack of horse power? I don't know many people that have the rancher type. Id guess you go to maybe Missouri or somewhere there might be. One thing I do like about them is they have the old style design of bale chamber. The M's and newer are a verticle chamber, just like JD or NH/Case IH. I thought the "true bottom design" was a better idea. Basicly a "rancher" baler is an old school Vermeer. I ran my Super J with 85 hp.
As said above, from what Ive heard from useres/dealers the M's are a heck of a baler. Super M or N could be even better. From what Ive been told the only real major change on the N is the ISO monitor & several sprocket & chain set ups. I have an "L". I've demoed a Case IH with wide pickup. Id never use one without it.
Guess not sure what your thinking. You can repair an old baler and make it new. Personally other than less hp needed, I don't see any advantage to a "rebel" type baler. If you got a good used M or Super M, make smaller bales. When you get a bigger tractor, you have a baler that can do more. Im sure they work just fine, just new paint is new paint! There is a 605K at Atkinson Ne with net warp on it. Looks decent, and Id bet its priced right.