I have used the Martelli tool for bindings and their stitch in the ditch foot when sewing both sides of the binding by machine and once I learned the technique, I found that it works pretty well. But even so mine is still never as neat looking as if I sew the back down by hand.
Susan Cleveland has a neat way of doing a piped binding completely by machine. It's different than the flange binding, but looks similar. I've done her method once and really liked the way it came out, but it takes some very careful sewing to get it right. She teaches the technique in one of her Craftsy classes.
Rob