I've not used the Moto X, but I own the G4 (recent update from my G2).

Fantastic device. Quick, clean, and the camera (both video and still) is exceptionally good. Issues with the G2 (slow focus for stills in low light, wandering focus in video) have been fully resolved. The new laser focus is spectacular.

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1961 220b: first project car - sold.
2000 CLK 430: first modern Benz - sold.
2001 CLK 55: OMG the torque!!! - sold
1972 280SE 4.5: Baby Gustav
1991 300TE 4Matic: Gretel the Snow Bunny - sold
1978 300SD: Katz the Free Man - given away
1980 Redhead: Darling Wife