FCP 7 was dominant but the disaster of early versions of FCP X forced a bunch of shops to switch to Premiere.
There are still things that make Premiere better. Recently I couldn't get an mp4 from a Sony cam to play at the right speed in FCP no matter what I tried, and it just worked in Premiere. I'm more fluid in FCP but I will probably switch too as Premiere just "feels more pro" now to me.
I've heard some great reports about Davinci, especially for post.
There are still things that make Premiere better. Recently I couldn't get an mp4 from a Sony cam to play at the right speed in FCP no matter what I tried, and it just worked in Premiere. I'm more fluid in FCP but I will probably switch too as Premiere just "feels more pro" now to me.
I've heard some great reports about Davinci, especially for post.