Similar device to the 2nd gen Moto X?

I've been thinking of upgrading from my 1st gen Moto G. I eventually settled on the 2nd gen Moto X as a suitable replacement. Unfortunately, due to a horrendous experience with Motorola customer service, that's not going to be happening. I kind of settled on the 4.7" Idol 3 as a replacement (yeah, quite a step down, and more of a sidegrade from a Moto G), but I thought before I pulled the trigger I'd try to crowdsource another option.

Basically, my priorities are:

• Length no greater than 140mm (5.5"). So I guess I'm looking at a 5" screen.


• Unlocked GSM.


• Price range 0-300 (new).


• Not terribly old; still available new.


• Company with a decent track record of getting OS updates to their devices.

Any opinions on non-Moto options I could look at?