If you're in the market for a cheap phone with power to spare, there's an LG G3 with your name on it. Well, it's really best if you're outside the US, but do you really need LTE? At $399.99, the international G3 is a solid deal and $80 less than last time.
This is the D855, which has LTE bands for non-US markets—700/800/900/1800/2100/2300/2600. No, that 700MHz band isn't the same one AT&T uses.