VFR+ makes it easy to avoid Class B Airspace.
Using the Fly To: Screen or Moving Map Screen in Flight Plan Mode the Next or Previous buttons continuously show the distance and bearing to the next and previous way point. Modify your flight plan so that the Class B airport that you wish to avoid is next to the destination that requires you to pass it. Then as you navigate to you destination, watch the distance to the Class B airspace to guarantee that you avoid it. This is a great time and stress saver.