The only, only reason I ever buy anything but the smallest phone they offer is because the best cameras are never on the smallest devices. The extra size is pure down-side for me, and I don't really give a shit about slightly faster processors or what have you (I hardly burden the low-end ones), but I do find when looking back at older photos I always appreciate when I've had better cameras, so I hesitate to go too low-end on those.

I'd pay about the same (or maybe even exactly the same, but feel a little annoyed about it) for a small Apple phone with the same camera as the expensive big models.