The best replacement for c100 is c300.

The best alternatives to c100 are rated as following:
★★★★★  c300
★★★★  fs100
★★★  5d
★★★  blackmagic
★★★  fs700
★★★  bmcc
★★  gh3
★★  gh4
★★  1dc
★★  blackmagic pocket
★  5d mark iii
★  af100
★  sony fs100
★  blackmagic cinema
★  c500
★  blackmagic cinema camera
★  c101
★  c90 nespresso
  black magic
  sony fs700
  xf300
  canon c300
  mark iii
  bmpcc

Your alternative for c100 is not listed? Suggest!
Speaking about c100, one probably shouldn't forget about samurai blade.

Other search terms related to c100 and their ratings are:
★★★★★ samurai blade
★★★★★ atomos ninja
★ ninja 2
atomos ninja 2
You have in mind a companion for c100 and it is not yet here? Propose!



Google Trends

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c100
c300
fs100