Here you can find a list of nearly all Polaroid cameras and some informations about them, the films, etc.

The best ones are the pro 180, 185, 190 and 195, because totally manual operated with a traditionnal shutter and works without a battery (no built-in lightmeter unlike the others), but they are more rare and expensive than the others.

I own a 180 pro and it's a wonderfull camera to use, especially with the 667 film (black & white 3000 iso), the 665 (black & white 100 iso with negative) and the 679 (colour 100 iso that permits emulsion transfert).