I don't know if maybe AdComs would see the volunteer gig as being more altruistic or whatever... But I vote for the job at the IFT company.
You'll learn a lot from the patients, nurses, doctors, etc, of course, but it might also be eye opening for you to have such a blue collar job. At least for me, I lived my whole life in the ivory tower, and it was a bit of a shock to suddenly be spending 12 hours a day sitting in a truck talking with coworkers who didn't graduate high school and had no plans to ever go to college. I learned a ton about myself, how to interact with people, how to be an employee, etc, from that job. I think a lot of the most important things I took away, I wouldn't have gotten if it was a college EMS service or a volunteer FD.
Also, despite being a paramedic and having all the toys and drugs and going to the cool calls with acutely sick patients... My favorite call I've ever done was a BLS discharge of a hospice patient where we basically did nothing medically.