The best replacement for mkii is mkiii.

The best alternatives to mkii are rated as following:
★★★★★  mkiii
★★★★  6d
★★★  d700
★★  impulse
★★  mkiii ruger
★★  steinhart
★  1d mkiii
★  5d
★  browning buckmark
★  mkiii 5d
★  5d mk iii
★  ruger mkiii
  nikon d700
  5d mkiii
  1ds mkiii
  1d mkiin
  40d
  cz 452
  mkiii tonebender

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

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



Google Trends

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mkii
mkiii
6d