XPL. There is no doubt the spotlight is heavily centered on Dovetail's Flight Sim World and Lockheed Martin's P3Dv4 with the larger eye focused on the latter. That said, some really exciting news for XPlane fans is UK2000 is working on XPL developments. I have not yet had time to look into XPlane11 or Flight Sim World and I have been spending very little time in P3Dv4 giving my work situation but rest assured, my time is freeing up soon to start the process of heavily digging into all 3 platforms as well as AFS coverage. More info via the source link.