I personally think most projects audio can be easily completed to a pro level in FCPX alone. The tradeoff when you go elsewhere is you lose the ability to continue making edits without a complex round trip and reconnect which is time-consuming. I *only* leave FCPX when I want to hand off a mix to a professional facility doing a high end mix in ProTools. If you stay in X you have good mixing, most of the Logic plugins and performance is solid.
If you go to Logic/ProTools you gain additional very high end plugins and also more traditional automated multitrack mixing capabilities. For most folks who are video production focused these are overkill and don’t outweigh the convenience of avoiding a round trip.
If you do want to try though, here’s a series with best practices for FCPX<>Logic X:
https://www.fcpworks.com/the-logic-of-sound-part-iii/
Noah
FCPWORKS – FCPX Workflow
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