Since I started experimenting with film in 2011, I've used two Ricoh AF-5s, an AF-7 and an AF-303. I bought them from different people, but none of them could be relied on for more than a roll or two before dying. Each succumbed to the same problem: partway through a roll, they'd jam, and then each time I pressed the shutter the camera would emit a shrill, constant beep. I also have used a couple different variants of the FF-3 AF, which is significantly more reliable than any of the cameras I've tried in the AF series - did the same beeping thing once but has never jammed.
I don't know, maybe I've just had bad luck with these cameras. Curious if I'm the only one, though.