and a final nod - worked with all - film, crop and FF.
It really is horses for courses. Film gives something that digital has as yet to equal, crop seems to be loved by those wildlife and action people whilst full frame seems to be the format of choice for weddings, portraits and landscapes.
FPS, Weather Sealing, Dual Card Slots etc are all just features of the camera that may influence a choice
My camera history: Canon AE1P, A1, Nikon 5700, 7900, Canon 30D, 40D, 5D2x2 and now Fuji X-Pro 1
Interestingly, the X-Pro 1 can match the 5D2 in just about every situation for IQ, DR, Noise, Low Light etc and it is only a crop sensor - moral of the story - technology is the crucial factor