The best replacement for planar is tetrahedral.

The best alternatives to planar are rated as following:
★★★★★  tetrahedral
★★★★★  xenotar
★★★★  sonnar
★★★★  pyramidal
★★★  tessar
★★★  distagon
★★★  spect
★★★  non planar
★★  electrostatic
★★  summicron
★★  geodesic
★★  recessional
★★  planar
★★  elo
★★  nonplanar
★  trigonal pyramidal
★  ribbon tweeter
★  coplanar
  electrostatic speakers
  ribbon
  chunky
  leica summicron
  trench

Your alternative for planar is not listed? Suggest!


No companions for planar have been suggested so far.
You have in mind a companion for planar and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of planar in all years. Click on graph for more.
planar
tetrahedral
xenotar