I love that these have grown in popularity, as they are everywhere, and affordable. I have an old polaroid camera, which is awesome, of course, but even with the impossible project, film is still pretty expensive. I've been itching to buy another instant camera lately, and these three have caught my eye.
Fuju Instax Mini 25 - $124 + $22 for 20 exposures
Polaroid z2300 - $160 + $25 for 50 exposures
Fuli Instax Wide Instant Camera - $80 + $40 for 40 exposures
Although the polaroid is more expensive, it's the most compact, holds an SD card, and the film is the least expensive, so I think that's what I'm leaning towards. You can also buy film with a white border too, for a more classic polaroid look.