The AIO Smart plan is $10 more per month than a better plan from Straight Talk (on the same network).
Also, does Straight Talk offer LTE as well? I think AIO comes with LTE. I also liked AIO's $70 plan as Straight Talk is limited to 2.5GB of 4G data on the unlimited plan.
(I use Straight Talk but was thinking about getting Nexus 5 which comes with LTE)
I'm planning to switch to ST when my AT&T contract expires.