The best replacement for dai is rsi.

The best alternatives to dai are rated as following:
★★★★★  rsi
★★★★  chuan
★★★  ip source guard
★★★  baran
★  qipao

Your alternative for dai is not listed? Suggest!
Speaking about dai, one probably shouldn't forget about brain injury.

Other search terms related to dai and their ratings are:
★★★★★ brain injury
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Google Trends

Scale is based on the average worldwide traffic of dai in all years. Click on graph for more.
dai
rsi
chuan