The best replacement for sansa is zune.

The best alternatives to sansa are rated as following:
★★★★★  zune
★★★★  nature air
★★★★  nano
★★★★  zen
★★  ipod nano
★★  creative
★  cowon
★  sony mp3
  creative zen
  iriver
  walkman
  sony walkman
  zen v

Your alternative for sansa is not listed? Suggest!
Speaking about sansa, one probably shouldn't forget about rhapsody.

Other search terms related to sansa and their ratings are:
★★★★★ rhapsody
You have in mind a companion for sansa and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of sansa in all years. Click on graph for more.
sansa
zune
nature air