I'm pretty sure moto still has a 0% finance option if you don't want to shell out all the cash at once. My recommendation is Dev edition. I'm on T-Mobile which allows unlocking and I still got the Dev edition to be on the safe side.
I went from a Verizon GS3 with CM to a Nexus 5 and MotoX Dev edition on T-Mobile. The MotoX is FASTER by a long shot, only to be surpassed by the nexus barely. You won't regret the switch.