Hi Richard,
I've taken a few screen shots to help explain my current gimbal settings and they are as follows...
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These settings are for my cam-op when using a two-man-set up.
If I was to operate solo, I'd adjust the gimbal tilt speed to 30.
Now for the settings of the Inspire, I have them set as the following...
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It's worth noting that I use these settings because they work for me as I'm often capturing smooth cinematic shots. If you were to be racing around a track getting fast, dynamic shots of cars it would be a different story.
There are no 'best' settings, it depends what flight and gimbal characteristics works best for you and your situation.
Hope that helps though and gives you a good benchmark to work from.