I'm juming ahead of a response to you....but the machine manufacturers are promoting three different types of quilting stitiches these days.
1.Feather stitch----for crazy patch.
2.Quilt Stitch--Looks like hand stitched...there is a very tiny space between stitches called a hesitation stitch---------
3.Stipple Stitch- A few machines have a stipple stitich, but not many,and the quality is not as good as a little practice by the quilter just doing free motion.
Hope this helps....