The best replacement for 737 is 757.

The best alternatives to 737 are rated as following:
★★★★★  757
★★★★★  a320
★★★★  767
★★★  airbus a320
★★★  777
★★★  747
★★  a319
★★  787
★★  a321
★  a380
★  md80
★  738
★  airbus 320
★  airbus
★  pmdg
★  320
★  la 610
★  727
★  757 bigger
  747 bigger
  707
  717
  airbus a319
  a330
  c9
  boeing 757
  universal audio
  airbus 319
  757 which is better
  ge90
  embraer
  319
  837

Your alternative for 737 is not listed? Suggest!
Speaking about 737, one probably shouldn't forget about u87.

Other search terms related to 737 and their ratings are:
★★★★★ u87
You have in mind a companion for 737 and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of 737 in all years. Click on graph for more.
737
757
a320