Cannot recommend FCPX: the UI is cluttered, obtuse, and slow. Media management is cumbersome, and even the most basic adjustments use OS9-like controls.
Yesterday I (very sadly) removed FCPX and Motion from my computer. Blackmagic DaVinci Resolve offers much better design, interface, control, media management, and speed. Apple has given little love or support to professional users in this, and many other 'Pro' apps.
I didn't abandon Apple – they abandoned me.