I have moved on to Premiere Pro CS6. Sometimes I play with FCP X. I think Premiere Pro CS6 is surprisingly similar to FCP7. Then again, Premiere Pro CC is already out by the time I write this. Premiere Pro also exports faster than FCP.
FCP X is good for quick edits. Easy to put something simple in a short time.
Anyhow, I think Macbook Pro Retina is a great option for editing with the portability. Only the motion graphic artists or people editing Red/Raw may need to consider the new black Mac Pro for added power.