The best replacement for blackmagic is 5d.

The best alternatives to blackmagic are rated as following:
★★★★★  5d
★★★★★  c100
★★★★  gh3
★★★★  canon 5d
★★★★  gh4
★★★★  red epic
★★★  aja
★★★  alexa
★★★  red camera
★★  canon c100
★★  avermedia
★★  5d mark iii
★  fs100
★  tricaster
★  matrox
★  kona
★  elgato
  hauppauge

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Speaking about blackmagic, one probably shouldn't forget about avid.

Other search terms related to blackmagic and their ratings are:
★★★★★ avid
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blackmagic
5d
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