The best replacement for mdpv is mephedrone.

The best alternatives to mdpv are rated as following:
★★★★★  mephedrone
★★★  methylone
★★  apvp
★  ethylphenidate
★  methylenedioxypyrovalerone
  3 4-methylenedioxypyrovalerone and mephedrone
  a-pvp

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

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



Google Trends

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mdpv
mephedrone
methylone