At first (v1) the look. Then I met the team at Musikmesse some years ago. Jumped in and got addicted by a concise GUI and work ethic. And now v4 brought comping, I could happily retire from other DAWs (though I’ll still hang on to Logic, Reason and Tracktion). Also, I find FL is (much) more EDM oriented while Bitwig even allows for classical work. And they only just added orchestral strings from those famous Berlin devs at Orchestral Tools.
I’ll say one thing for FL though, free lifetime updates.