Same thing as comparing a phone camera to a professional camera really. For the average person, nothing really changes beyond a steep learning curve. But better quality video, faster(not fpv fast of course), can carry a heavier payload, a lot more options when making videos/capturing photos(which will likely be my next biggest challenge - geting the wiring from the drone to the gimbal and camera. But one bridge at a time - the gimbal is proving to be insanely challenging as it is so far.