The best replacement for honeywell is nest.

The best alternatives to honeywell are rated as following:
★★★★★  nest
★★★★★  aprilaire
★★★  adt
★★★  dsc
★★★  holmes air purifier
★★  honda generator
★★  lux
★★  nest thermostat
★★  generac
★  sentry safe
★  sentry safes
★  lux thermostat
★  ecobee
★  2gig
★  novita
★  lasko
★  sunbeam humidifier
★  holmes
★  aprilaire humidifier
★  texecom
★  vicks humidifier
★  minolta
★  hunter thermostat
★  filtrete
  white rodgers
  belleville
  rite temp
  accuclean
  johnson controls
  aprilaire humidifiers
  vornado
  emerson
  therapure
  blueair
  filtrete thermostat
  delonghi
  asahi
  ritetemp
  ge security
  sentry
  sperry rand
  drayton
  deltav
  lux thermostats

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

Other search terms related to honeywell and their ratings are:
★★★★★ thermostat
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Google Trends

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