The Polaroid Flip camera is a sweet find if you're into that analog life 
. I mean, who doesn't love the nostalgic feel of having instant pics? The fact that it's cheaper now is awesome too, that $35 discount will definitely make it more accessible to some people.
From what I've read, the camera itself seems pretty solid - sonar autofocus and all that jazz
. And yeah, manual exposure adjustments are a bonus for those who like to get creative with their shots.
But, like you said, if you're looking for something with faster print times or better low-light performance, Fujifilm's Instax Mini 12 might be the way to go
. Still, the Polaroid Flip has its own charm and if you value that retro aesthetic, it could be a great choice.
From what I've read, the camera itself seems pretty solid - sonar autofocus and all that jazz
But, like you said, if you're looking for something with faster print times or better low-light performance, Fujifilm's Instax Mini 12 might be the way to go