Another positive Android surprise:
http://xtremesoaring3d.com/
Test description at the very bottom of the screen. Scroll down.
Very surprising how well it works! Very good app, reminds me quite a bit of Condor.
Did some dogfighting in X-Plane, and got shot out of the sky. Nice. There is really some challenge, last but not least due to the gyroscopic steering, which is unusual and makes it pretty much fun during extreme manouvers.

I see no need to invest much money in x-Plane, but three or four planes is okay. I bought a P-51, a glider, a 787 and an F-22. So: one plane for every opportunity.