My very first quilt had mitered borders because that is how the instructions in the book read. I am glad because it taught me the process. I like the look of pieced borders and cornerstones as well. So now I only miter if I am using a border fabric with a print that calls for it, like a stripe of some sort, or as many here have also posted, when I have multiple borders it is sometimes easier to sew the borders together and then miter them on. Always it is dependent on if I have enough of my border fabric. I tend to buy fabric and stash and then choose a quilt pattern. This has bitten me in the behind more times then I care to admit and of course by the time I end up making the quilt out of said stash the fabric is several years old and impossible to find more of. You'd think I'd learn. Well I guess I have, when stash building I just buy more yardage :lol: