The best replacement for coil is foam mattress.

The best alternatives to coil are rated as following:
★★★★★  foam mattress
★★★  humbucker
★★★  foam crib mattress
★★  comb binding
★★  air fork
★★  moving magnet
★★  spring mattress
★  single voice coil
★  dual voice coil
★  air shock
★  leaf spring
★  implant
★  elph
★  dragon dance
★  microcoil
★  pill
★  flat top stove
★  smooth top
★  glass top stove
★  foam baby mattress
★  rotary tattoo machines
★  rotary tattoo machine
★  evanescence
★  leaf springs
  adder
  smooth top range
  atomizer
  memory foam mattress
  glass top range
  ceramic cooktop
  innerspring
  ceramic heater
  dual coil
  wick
  smoothtop range
  air forks
  humbuckers
  flat top stoves
  mini pill
  single
  epoxy filled coil
  smoothtop
  latex mattress
  memory foam
  smooth cooktop
  inductor
  air rear shock
  moving magnet cartridge
  contraceptive pill
  humbucker pickups
  flat top ranges
  radiant range
  air suspension
  iud
  moving magnet cartridges
  spiral
  vav
  pocket sprung
  mirena
  rotary
  nightwish
  foam mattresses
  plug wires
  radiant
  stick nailer
  foam crib mattresses
  smooth range

Your alternative for coil is not listed? Suggest!
Speaking about coil, one probably shouldn't forget about fear lyrics.

Other search terms related to coil and their ratings are:
★★★★★ fear lyrics
★★★ igniter
ignitor
humbucker
You have in mind a companion for coil and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of coil in all years. Click on graph for more.
coil
foam mattress
humbucker