The best replacement for nook is kindle.

The best alternatives to nook are rated as following:
★★★★★  kindle
★★★  kindle fire
★★★  ipad
★★  nook color
★★  kindle 3
★★  ipad mini
★★  kindle fire hd
★  kobo
★  tablet
★  kindle reviews
★  cranny
★  kindle app
★  sony reader
★  kindle 2013
★  kindle 2
★  kindle paperwhite
★  kindle 2010
  kindle hd
  android tablet
  kindle for textbooks
  kindle fire hdx
  nexus 7
  fire
  kindle comparison
  sony
  amazon kindle
  color nook
  kindle price
  kindle tablet
  kindle better
  pandigital
  kindle 2012
  kindle book prices
  kindle touch
  sony ereader
  kindle 3g
  kindle which is better
  kendal
  kindle fire for kids
  kendle
  booth
  kindel
  kindle sales
  ereader
  by book

Your alternative for nook is not listed? Suggest!
Speaking about nook, one probably shouldn't forget about 3g.

Other search terms related to nook and their ratings are:
★★★★★ 3g
★★ google play
★ honeycomb
★ kindle
kindle books
free 3g
internet
registering
You have in mind a companion for nook and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of nook in all years. Click on graph for more.
nook
kindle
kindle fire