I'm four years removed from the DFW area, so my information probably is not current.
Don't think too much about American Flyers at FTW or ADS for ME training. I used to teach at both locations. They use a Duchess, but there is not one at each location. The Duchesses AF did have were shared amongst all schools nationwide.
Bourland Aviation, SW of FTW, had a Baron which I used for my MEI training. It was well maintained. However, I recently heard Dick Bourland closed the school. I don't know if that's accurate.
Good luck...Fly safe!