Admittedly I haven't used them all, but now I am in a large project (series actually) I realize the reason I've used Vegas/MovieStudio for a long time is the intuitive way it works. I've tried Premier and Resolve and IMHO the work flows are just enough different that they are not as easy to use.
Just like the camera wars, it is so easy to confuse things and work flows that are important from those that are marketing driven. And I will admit I do have a lot of muscle memory that goes with using Vegas.
With all the permutations and combinations in the PC world its amazing that any piece of software works with most of the systems so well. But I think Vegas 16 brings Vegas in a very sweet spot in the NLE world for a specific set of users. And I really am thankful that I am one that is really benefiting in my work flow. Back to editing:)