I use a variation of the Sharon Schamber's method (no glue) and I must admit that it takes me FOREVER - but I am usually happy with the result. Until I learned it, I did the same thing you did Blue - overlapping and bulking.
Now I leave a rather long strip at the beginning and the end unsewn so I have plenty of room to maneuever the binding and the quilt top to fold, mark, pin, and sew the binding strip. When it is sewn at a 45 (and the 45 angle should go in the SAME direction as the other 45s - guess why I mention that!) the binding lays nice and flat. It is like a perfect picture frame.