I do all my binding by machine...sew to the front and SID on the front.
The trick is to have enough binding to catch it to the back. Otherwise I
have to go back and hand-stitch where I missed. Sewing the binding
straight in the first place definitely helps. I cut my starched binding 2.5"
and sew with 3/8" seam allowance. Making a test sample with same fabrics
and batting also helps find any problem before sewing the whole binding to
the quilt. I like to use this little template to mark my corners.
http://www.connectingthreads.com/Too...r__D81892.HTML
I stop one stitch before the mark and my corners look pretty good.
I glue my binding to the back with Elmer's school glue before SID to the front.