The best replacement for ellipticals is treadmills.

The best alternatives to ellipticals are rated as following:
★★★★★  treadmills
★★  exercise bikes
★★  bikes
★  stationary bikes
★  steppers
★  recumbent bikes
  spirals
  arc trainers
  treadclimbers
  rear drive

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

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



Google Trends

Scale is based on the average worldwide traffic of ellipticals in all years. Click on graph for more.
ellipticals
treadmills
exercise bikes