Fighting with which side of your trim will have an exposed end? Stop settling for less than ideal results. Your answer is lock mitered edges. It's a quality finish that takes a little bit of time and effort, but has an unmatched finish. Check out the picture below that shows the advantage of the lock mitered edge.
The customer walks in and out of there front door every day. So which way to you overlap your trim when making your outside corner? And then there is sanding the edges in the case of pine. Or working the trim im and out with PVC in hopes of lining up a perfect edge (which never happens).
The lock miter joint solves all of these issues. It will require a router, Router table and some careful depth setting. But once you are locked in you will love your final result. And your customer will too!