If you like the FE, why not just find another good used one. I know I like mine well enough to have a backup "just" in case. I also love photographing just about anything with my old FA too (it has a backup also).
I got an nice F4S probably 4 years ago when I decided to get back into film. My first venture back into film after 20+ years of basically not photographing anything....boy did I notice the slow AF, but for the most part it worked well for me. Even got a AF teleconverter and routinely slap an old MF prime on it......focus in the ball park, then the autofocus seems to work better and faster for me that way.....I maybe fooling myself, but I sure like the fact I can autofocus my old MF lenses using a teleconverter with autofocus....I have much less difficulty taking pictures of small kids moving around.
Finally, please tell us who worked on your camera twice and couldn't fix it......I can't believe that a big repair facility wouldn't stand behind their work.
Bob E.