I think Sonar has the best
plugin manager. I sorted every plugin and instrument the way it seems most logical to me and now miss this functionality in all other DAWs I've tried. Also, nice and clean routing in Sonar is top-notch. No other DAW has such an elegant implementation of
track routing, although most do have powerful routing options. An lastly,
comping in Sonar is a breeze. E.g., in Reaper it's easy to mess the perfect comp by accidentally clicking on a wrong chunk. In Samplitude takes are easy to use, but they do not provide any visual information unless chosen. Take Composer tool seems nice, I haven't used it much yet.
And one of the most useful features in Sonar -
auto track zoom - is a must have for every DAW. But unfortunately, it's not found anywhere.
Had all these features been implemented in Samplitude or Reaper, i'd jump ship immediately. As of now, I'll stick with Sonar as long as possible.