The best replacement for shure sm7b is re20.

The best alternatives to shure sm7b are rated as following:
★★★★★  re20
★★★★  akg c214
★★★  rode nt2a
★★★  sennheiser 421
★★★  sm7
★★  blue spark
★  heil pr-40
★  rode nt1a
★  neumann u87
  blue baby bottle
  electrovoice re20
  neumann tlm 102
  blue bluebird

Your alternative for shure sm7b is not listed? Suggest!
Speaking about shure sm7b, one probably shouldn't forget about apogee duet 2.

Other search terms related to shure sm7b and their ratings are:
★★★★★ apogee duet 2
You have in mind a companion for shure sm7b and it is not yet here? Propose!



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shure sm7b
re20
akg c214