The best replacement for incandescent is fluorescent.

The best alternatives to incandescent are rated as following:
★★★★★  fluorescent
★★★★★  led
★★★★★  halogen
★★  cfl
★★  compact fluorescent
★  led flashlight
★  fluorescent bulbs
★  fluorescent lighting
★  led christmas lights
★  fluorescent light bulbs
★  led rope lights
★  halogen heat
★  led recessed lighting
★  led lighting
★  fluorescent aquarium
★  fluorescent light
  fluorescent lumens
  fluorescent spectrum
  halogen lights
  compact fluorescent bulb
  halogen headlights
  led lights
  halogen bulb
  fluorescent lights
  led bulb
  iridescent
  led flashlights
  cfl wattage
  led light
  candescent
  metal halide
  luminescent light
  halogen lighting
  fluorescent light spectrum
  fluorescent light bulb
  halogen wattage
  led rope light
  fluorescent bulb
  low voltage
  halogen bulbs
  led light bulb
  high pressure sodium
  led torch
  cfl heat
  fluorescent lamps
  xenon
  led color temperature
  compact fluorescent bulbs
  led lumens
  gu-10 halogen

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

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



Google Trends

Scale is based on the average worldwide traffic of incandescent in all years. Click on graph for more.
incandescent
fluorescent
led