The best replacement for d14 is c14.

The best alternatives to d14 are rated as following:
★★★★★  c14
★★★★★  h100i
★★★  u14s
★★★  h70
★★★  silver arrow
★★  h80
★★  h100
★★  corsair h100
★★  hyper 212
★  h60
★  nh-u14s
★  coolermaster v10
★  thermalright silver arrow
★  u12p
  nh c14
  noctua nh-c14
  h50

Your alternative for d14 is not listed? Suggest!
Speaking about d14, one probably shouldn't forget about g.skill ripjaws.

Other search terms related to d14 and their ratings are:
★★★★★ g.skill ripjaws
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d14
c14
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