I've narrowed down my alternate choices (for a backup DAW) to Studio One 3 and Reaper.
Studio One is solid, easy to setup and use, but I don't care much for the GUI (graphical user interface)
And Reaper, while it's got a much steeper learning curve, and has crashed a couple of times using my plugins, has the BEST GUI I've ever seen. Actually not the factory GUI, but the theme sets available for it
I always wanted Sonar to have an interface that looks like an old-school mixing board with backlit "cube style" buttons and lots of simulated LED lights. (And yes I know it's what the DAW can do, and not so much what it looks like, but still....)


This is one of the more popular user-created themes, and one of my favorites. There are tons more, with a big variety of styles and colors. But in the end I keep going back to Sonar Platinum for doing any "real" work.