The best replacement for xdcam is p2.

The best alternatives to xdcam are rated as following:
★★★★★  p2
★★★★★  hdv
★★★★  hdcam
★★★★  prores
★★★★  avchd
★★  nxcam
★★  dvcpro hd
★★  avc intra
★  dvcpro
★  panasonic p2
★  dnxhd
★  dvcam
  apple prores
  dsr 400
  prores 422

Your alternative for xdcam is not listed? Suggest!
Speaking about xdcam, one probably shouldn't forget about fcp.

Other search terms related to xdcam and their ratings are:
★★★★★ fcp
You have in mind a companion for xdcam and it is not yet here? Propose!



Google Trends

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xdcam
p2
hdv