At one time I had three: a KX, a P3, and a ZX-M. The ZX-M suffered the plastic gear syndrome and died. The P3 has not been used since I started bulk-rolling my own film. I didn't have the foresight to buy the DX coded canisters and I don't have the ambition to encode the canisters myself. It's a shame because I otherwise like that camera.
The KX is my favorite though. I bought it from a forum member here, and it arrived well-used but well-treated. I shoot left-eyed, but the lever advance activated meter does not bother me. I'd love to get another as a back up, but I really don't "need" one. I'd rather get a K series 24mm or 28mm.
And having seen the black SV that Séamuis re-covered (from another thread), I have begun to seriously covet one.