I strongly recommend against adopting a tool on the pretext that it is the most used. Popularity is in no way linked to quality. We should ask ourselves about the motivations for adopting BIM and the expected needs. Need real-time collaboration via macOS and Windows ? Need a tool using all the hardware resources of my computer station ? Need an easy-to-use ergonomic tool ? Etc.
For many questions the answer remains Archicad and for revit remains the argument of the number which will never encourage quality ; especially about openBIM or Archicad is also the best and has always been!