The best replacement for protank 3 is aerotank.

The best alternatives to protank 3 are rated as following:
★★★★★  aerotank
★★★★  iclear 30s
★★★  aspire
★★★  iclear 30b
★★  aspire nautilus
★★  vivi nova
★  protank 2 mini
★  unitank
★  protank
  davide bdc
  protank 2

Your alternative for protank 3 is not listed? Suggest!
Speaking about protank 3, one probably shouldn't forget about ego twist.

Other search terms related to protank 3 and their ratings are:
★★★★★ ego twist
★★ provari
You have in mind a companion for protank 3 and it is not yet here? Propose!



Google Trends

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protank 3
aerotank
iclear 30s