The best replacement for moto g is nexus 4.

The best alternatives to moto g are rated as following:
★★★★★  nexus 4
★★★★  galaxy s3
★★★★  moto x
★★★★  nexus 5
★★★  iphone 4s
★★★  iphone 5c
★★★  galaxy s2
★★★  lumia 520
★★  galaxy nexus
★  iphone 4
★  samsung galaxy legend
★  galaxy light
★  nokia lumia 520
★  htc one x
★  s3 mini
★  htc one sv
★  google play edition
★  galaxy s3 mini
  grand 2
  xperia m
  lumia 525
  ipod touch
  xperia sp
  optimus g
  xperia l
  moto x specs

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Speaking about moto g, one probably shouldn't forget about data cable.

Other search terms related to moto g and their ratings are:

★★★★★ data cable
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Google Trends

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moto g
nexus 4
galaxy s3