I just cut together a major project on Final Cut Pro X. It was a multicam project. In some scenes there were 6 shots up at the same time. I also assembled animation in it, quite a few titles, had to color correct everything quite a bit because of a lighting issue, etc.
Final Cut Pro X worked great. In fact, in the 20+ years I've been editing this has been the best experience ever. BY FAR.
FCPX takes all of the drudge out of editing and you can work at the speed of your thoughts. Its a dream!
Sure, there isn't that silly live type that FCP used to have.... but if you think you're a "professional" and not having live type is a problem, I've got news for you: You're not a professional.
I think there are some areas where it can be improved. While livetype was a gimmicky feature, the type system needs more flexibility. I used motion to do a custom opening sequence (and it worked great) but I don't want to go to motion all the time... though we're just creating a couple bumpers and titles that we'll use all the time, type in FCPX sans motion could be improved.
And I ran into a couple bugs.
But anyone who claims they're abandoning FCPX because they're "professional" and it isn't "professional" is wrong on both counts.
I know there are editor assistants-- trained button pushers-- people who don't understand technology and thus it will take a long time to teach them how to use FCPX because even an intuitive interface doesn't work for them because to be intuitive they have to understand what video is... but these are people who were never going to advance much in their career anyway, and they're a small part of the market (but obviously noisy.)