I finally buckled down and followed the awesome X-Plane Ortho4XP Guide and got amazing results with X-Plane 11, thanks @fearlessfrog !
Since I moved from Seattle to near Philadelphia a few months ago, I thought I was going to have a hard time finding decent scenery to sim fly in after being spoiled by owning tons of ORBX PNW scenery, but thanks to Ortho4XP Bing and that guide I now have some amazing scenery in my new region!