Steve,
My coach has both leveling systems, and I almost entirely use the air leveling system. Air leveling is definitely easier on the windshield. You will get some movement in the coach from wind, but it is not enough to bother me. There is also a little movement from people moving around in the coach, and if you are very sensitive to that you may want to see if that bothers you by airing the coach to travel height an spending a few hours or days in the coach without lowering the jacks. That is exactly how it will feel when air leveled.
The other things that I like about air leveling is that you never have to worry about jacks sinking into soft ground, or jacks damaging asphalt surfaces, especially in hot weather.
Gerald