Sony Vegas Pro 11, and I've been with Vegas since 8. I've used Avid, Premiere, and Final Cut, and Vegas is superior to them all, in my opinion. Powerful, much easier to use and more intuitive than the other programs, good plugins, can work with many codecs (including ingesting ProRes), and is so simplified over the use of something like FCP or Premiere, but not more primitive, necessarily. And more inexpensive.
The main drawback on it is that companies don't make as many plugins for it as they do for Premiere or FCP because those are more widely used.
Why companies insist on using software with higher learning curves and that are more expensive, I don't know (well, I can guess it's because of a saturation of editors using them, as well as inertia/lack of desire to try out alternatives).