After using studio one for the last few months, I REALLY appreciate the layout and look if sonar. Studio 1 is terrible looking. Particularly the track view. It's a mess.
My two cents:
Sonar is only lacking when it comes to time and pitch stretching. Studio 1 excels at this.
The only other thing is stability. I use Ctrl left and right arrow to zoom in and out -constantly. Every one in a while this caused a crash. Studio one has never crashed since I got it in December.
But sonar is a recording studio, and a great one.
The editing tools are so easy to use.
Between the included tools and the 3rd party plugins, it's damn near perfect.
Honestly, I don't want them to change much.