Larry Jordan has a very informative and in depth article on why Final Cut Pro 7 Editors should consider Premiere Pro.
I long ago made the switch on my personal system, and am starting to see companies move away from Final Cut Pro 7.
I know that Trailer Park made the move fully to AVID Media Composer for all of it’s bays, but they have graphics departments, so you basically are only cutting graphics into your edit there. And I have heard rumored that it is the studios forcing many companies to move to AVID. I actually wonder if they are getting kickbacks or if it is just older people more familiar with AVID? It is a rock solid system, but it seems so dated compared to Premiere Pro which I would say is a much more modern editing software.
As for Direct Response Beach Body made the move to Premiere Pro, which to me only makes sense for Graphics Heavy projects. Especially with a fast video card.