Don't forget to check out the Superguide in the "Share Your Badassity" section. It's stickied up at the top of the threadlist over there.
We have a Moto G with Republic, which has been great for us-- we use it as a home phone on the $5 plan. It's actually more smartphone than we need, but we're coming from previously having only a basic landline (no long distance, even), so any smartphone would be super-amazingly over-featured in comparison. The super-guide recommends against Republic, so do your research.
I also deliver pizza, and bought a used (refurbished) Moto E, which I'm using on Platinum Tel's PAYGO service, which is cheaper still, since I only need about 20 min of talk per month.