I've got a Moto G through Republic Wireless (http://republicwireless.com). It's the stock android OS but with software making a hybrid phone where it makes calls over wifi if available and cell if not. Pretty tough to beat contract-free all you can eat minutes, text and data for $25 per month on a capable phone that is less than $200 cash. Blows my mind that people still pay $80+ per month for their smartphone plans.