If you like gliding with the possibility to use the onboard motor, then this Aerobask Antares 20E is a great model. Together with the thermal plugin from Alex Ferrer, your X-Plane 10 and/or X-Plane 11 adventure can begin.
Stephane Buon, lead developer of Aerobask modeled this glider a while ago, and recently it was updated for X-Plane 11 and when I say updated, the glider benefits now of all the new X-Plane 11 features.
Angelique van Campen, your personal reporter as always, has tested the Antares 20E with both X-Plane 10.51 and X-Plane 11 including the special thermal plugin. Was it worth it, was it fun, did it all work? You can read it in her comprehensive review.