The best replacement for enphase is solaredge.

The best alternatives to enphase are rated as following:
★★★★★  solaredge
★★★★  power one
★★★★  solarbridge
★★★  enecsys
★★★  sunny boy
★  sma inverters
★  solar edge
★  tigo
  fronius

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

Other search terms related to enphase and their ratings are:
★★★★★ sunpower
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Google Trends

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enphase
solaredge
power one