For whatever it is worth, I recently had a foraminotomy at the c5-c6 level with an orthopedic doctor. He also has a degree in Engineering which I thought contributed to his meticulous placement of adr's and understanding of biomechanics.
It seems the doctors who have little to no experience in adr's are naturally the ones not recommending them. There is plenty of documentation out there on how many cycles, loads, etc. regarding the Prodisc C. My main concerns would be to use a surgeon who has been implanting adr's for years, bi-level experience, and the best technology (disc).
Did the doctor who recommended fusion discuss the likelihood of adjacent disc degeneration?
Just some quick thoughts regarding your scenario!