I use 2" bindings, folded in half and sewn by machine to the top and then handstitched to the back.
It is much easier to sew the bindings to the to the top if you do NOT cut away the excess batting and backing! This allows the quilt to feed evenly through the machine on both feed dogs, instead of pulling away to the left of the machine. After you have the binding sewn on, you trim away the batting and the batting using the rotary cutter. It works nicely, because you measure and cut 1/4" from the seam you just sewed, and you have a perfect binding!