The best replacement for g10 is micarta.

The best alternatives to g10 are rated as following:
★★★★★  micarta
★★★★  g15
★★★★  g11
★★★  g15 driver
★★★  g12
★★  frn
★★  g15 irons
★★  rapture
★★  fr4
★  carbon fiber
★  lx3
★  canvas micarta
★  i10
★  panasonic lx3
★  p6000
★  nikon p6000
★  e2
★  g5
  g20 driver
  g2
  g25 irons
  g9
  g20
  seam
  rapture irons
  g11 review
  s1
  rapture driver
  sx1
  rapture v2
  ping rapture
  callaway x20
  x20
  canon g11
  mapking 2007
  sx200

Your alternative for g10 is not listed? Suggest!
Speaking about g10, one probably shouldn't forget about 270ex.

Other search terms related to g10 and their ratings are:
★★★★★ 270ex
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g10
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