Richard Keates has a good article on why he dropped FCP X after trying to use it to cut corporate video, and why Premiere Pro is the solution for what he needs to do (graphics heavy productions).
Unfortunately I see many places moving back to Media Composer which I do find inferior for graphics work and hope that Premiere CS6 can make some inroads. I just wish that Apple would re-commit to the MacPro and push to get powerful CUDA Nvidia cards across their line to allow people who are unhappy with FCP X to use the products they want to and stay with Mac!