Since the discontinuation of all roll and pack film, and the Impossible Project resurrecting integral film, your camera choices have shifted to Polaroid's newer cameras. Foldable SX-70 cameras are very fine cameras, but require a flash source and impossible film choices are limited. 600 series cameras are the most common cameras, and they usually have built in flashes, and a wider variety of instant film. Spectra cameras have a larger print area and some models have more camera features such as a self timer. They also are regarded as having a higher quality lens than 600 series cameras. The impossible project only sells a 3 film spectra film pack.