I've owned/rented most of these...
Nikon F3 HP (with the motor drive for studio and outdoor tripod work, without the MD-4 for compact street shooting, without the prism for the feel of a Japaneese 35mm Hasselblad ;-))
Nikon EM
Nikon FG (bright crisp viewfinder but low eyepoint)
Rollei SL 126? - its been too long) interchangeable Zeiss lenses and 126 cartridges
Rollei SL 2000 (too boxy for me, though great for a its removable 35mm back system concept)
Rollei SL 66 (the one with a built-in bellows that could do Scheimpflug-like maneuvers)
Exacta 66 (the revised model (rubberized))
Holga (if plastic can be said to have much of a "personality")
Zeiss Ikon (the one/rangefinder with aperture priority, I'm not sure if its still in production)
Leica SL-2
Leica M3
Leica M4 (in particular, Garry Winogrand's with its lovely 28mm Canon Serenar (sp?) lens, lovely rendering in both black and white and color)
Leica M5 (larger but cheaper than an M6)
Kodak Retina Reflex (superb Schneider lens)
Canon VII (rangefinder, a cheap man's Leica)
Maxxum 7 (the height of analog technology, always wanted but could never afford the Nikon F6)
Minolta X-700 (small compact well built bright crispy viewfinder but lousy eyepoint)
Minolta CLE (nice lenses too)
Konica FT-1 (built-in motor drive but never got along with only shutter priority as the main auto mode)
Pentax Super Program (very small, decently sturdy, multiple exposure modes and TTL flash witha motor drive that was too honk'n big!... Speaking of which...)
Contax AX (more of a balloon with a built-in movable film plane that did AF than a camera ;-))
Contax ST (largish but nice)
Contax RTS (both II and III)
Pentax ME Super (lovely large viewfinder and aperture priority/manual)
Pentax 645 (large, automated, solid and nice large/exc quality slides/negs)
Pentax 67 (same comments as above, not automated but with a mirror slap that could launch you into orbit)
Mamiya RZ 67
Fuji 6x8 (like a more advanced RZ on steroids)
Hasselblads (on a tripod only, I never got along with their viewfinders whether waist level or prism the image felt like it was always off to me, either I was tilting or the camera was, the perfect 2 1/4 for Garry Winogrand's proteges for those who don't want to use a Mamiya 6 or 7 or one of Fuji's Texas Leicas)
Canon QL17 (compact, solid and a lovely lens/bokeh, not thrilled with its having shutter priority as only auto mode)
Olypmii(? plural) OM 1👎 and 2👎
Ricoh (there was a 35mm SLR by this company that actually powered off of the sun(light)
Olympus E-3 (well built, nice image quality/sensor, but way way too big for a 43rds camera body)
The first Olympus 4 or 5 MP digitals with the built-in zooms (E something...)
Rather than "personality" my current camera, a Pentax K-r, seems more of a perfect extension of my own personaility/vision - its only fault is that its very hard to fit Kodachrome 25 or 64 into the battery chamber!!!
Too many other cameras to remember... ...Any old camera that still works has some "personality" as long as it doesn't end up decorating a shelf or somesuch...