With the gliding foot you have to be much more careful of how high it is set from your material in order to get a good stitch. It should just skim across the fabric. There is a screw adjustment that allows you to raise and lower it.
I find with the hopping foot it sort of "tells" you when to move, in a jerkier way. With the gliding foot, you may find with practice you get nicer curves and circles. Just be sure there is no drag on your quilt and as Tartan says, use your needle down to hold the quilt as you reposition.
Watson