I always cut my binding 2 1/2" wide and I use the continuous tube method. Bias binding is just a little more forgiving than using straight strips. If I'm making a utility quilt, one that is going to get a lot of hard use and frequent washing, I often cut the backing a little larger and turn it to the front and top stitch. I like it to finish just a little wider too, probably 1/2". I try to make the binding suit the quilt or wall hanging and no one method fits all quilts.