The best replacement for re4 is re5.

The best alternatives to re4 are rated as following:
★★★★★  re5
★★★  caviar black
★★  constellation
★★  re6
★★  re4 hd
★  re3
★  re4-gp
★  ultrastar
★  caviar
★  re revelations
★  re2
  mgs3
  wd black

Your alternative for re4 is not listed? Suggest!
Speaking about re4, one probably shouldn't forget about honorable discharge.

Other search terms related to re4 and their ratings are:
★★★★★ honorable discharge
You have in mind a companion for re4 and it is not yet here? Propose!



Google Trends

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re4
re5
caviar black