MP3 is the format that taught music to travel: small, scrappy, and welcome absolutely everywhere. It was born in 1993, Fraunhofer Institute, Germany, and its real weak spot is holding fine detail at low bitrates: it stays small by quietly discarding sound.
MOV is Apple's homebody: gorgeous on a Mac, awkward everywhere else. The QuickTime container; often H.264 or HEVC, sometimes heavyweight editing codecs like ProRes. That makes it the right destination when what you need is shooting and editing on Apple hardware, where it's the native tongue.