I’m assuming you’re talking about actually attaching the binding to the quilt? I do both, don’t have a preference. Sometimes I’ll stop 1/4” from the edge, lock the stitches and trim the threads, then turn the quilt and start again. Other times I’ll sew into the mitered point. I’ve not found that one is better than the other. Since I always hand-stitch the binding to the back of the quilt, I do sew a few stitches into the mitered corners on the front and back then.