The best replacement for nexus 7 is ipad mini.

The best alternatives to nexus 7 are rated as following:
★★★★★  ipad mini
★★★★  kindle fire
★★★★  nexus 10
★★★  galaxy tab 3
★★★  kindle fire hd
★★★  kindle fire hdx
★★  ipad mini retina
★★  ipad mini 2
★★  ipad air
★  nexus 5
★  ipad
★  galaxy tab 2
★  galaxy note 8
★  lg g pad
★  nexus 7 2
★  samsung galaxy
★  nook hd
★  note 8
★  chromebook
★  ipad 2
★  ipad mini cnet
  galaxy tab
  galaxy note 3
  nexus 8
  galaxy tab 3 8
  galaxy tab 3 8.0
  asus memo pad
  tab 3 8.0
  samsung tab 3
  nook
  kindle hd
  mini ipad
  samsung galaxy tab 3
  10
  kindle hdx
  kindle paperwhite
  galaxy 7
  samsung galaxy tab 2

Your alternative for nexus 7 is not listed? Suggest!
Speaking about nexus 7, one probably shouldn't forget about chromecast.

Other search terms related to nexus 7 and their ratings are:
★★★★★ chromecast
★★★ case
★★ ps3 controller
You have in mind a companion for nexus 7 and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of nexus 7 in all years. Click on graph for more.
nexus 7
ipad mini
kindle fire