I machine stitch all of my bindings... For several reasons... I get more stitches per inch and perfect thread tension, plus by the time I get to a binding ... I am really ready to be done with the quilt.
I think I ran into the only show that did not find a machine stitched binding a fault. One of my quilts was entered in a show and it took top prize. Granted the show was not Houston or a major national show, but I was stunned.