Has anyone switched from a G4?

Debating on picking up the moto x style (uk) and selling my G4. I think I'll miss the camera and smoothness of the G4, and I've heard about a slew of problems people are having with the moto x (overhearing, lag, bad screen, popping speakers)

Just not sure what to do, so if anyone has swapped from a G4 could you please say what your experience has been like.