Have used the F90X(Canada version) as my main unit for years. Coupled with the grip, mf-26 and a SB-28 w/stroboframe, it is and always has been FANTASTIC!!!
Will use it til it dies, so another 20 years I think.
Pushed through about 8000 rolls of color so far, not much B&W. Never tried infrared(but will soon).
LONG LIVE THE F90X...LOL