I have had two airplanes with VG's (a Maule and now my 337) and one without. While they seem to vastly improve flight characteristics at the stall and indeed lower book stall speed, turbulence is turbulence. My patient flyer wife (who gets motion sick very easily) is still grabbing the barf bag from time to time and/or taking ginger pills -- with VG's or sans-VG's.
Bill
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