According to the German online magazine Musotalk FL studio is currently the most popular DAW in the world
This is not only based on sales numbers but also on google actions..
So what does make this DAW so succesfull? A) Price, its not expensive B) the fact that some of the leading Deejays like Martin Garricks use it Its espescially popular because of theyouth setting their teeth in it.
But is it the best DAW? Who knows, only its advanced users will know, as the best DAW will allwyas be the DAW you know best..