I have a F235D that I have been very satisfied with. My dealer in SC helped out with two problems, one caused by me, one faulty wiring in the UFO when re-assembled during renovation. I had to return the tractor to trouble shoot the wiring problem which caused the 3 pt hitch to not stay down.
I got the same feed back as you're getting from the YM--- tractor owners and dealers. They haven't had experience with the newer F/FX series with the exception of Tractor Ernie and a few others.
I have not had a need for parts yet, so can't say for certain repairs would be a problem, but more F/FX series tractors are arriving everyday.
Good luck, if the F215 is reasonably priced, I would go for it.