My binding width depends on the quilt design. Some of my quilts feel more balanced with a wider binding and some I prefer a skinnie binding. I machine sew my bindings to the front and hand stitch to the back. In the last year I have switched to using only bias cut binding solely. I just prefer the way it hugs the quilt edge over straight of grain cut binding. Just my personal preference as there is no reason to use bias binding on any quilt other than one with curves