The Antares 23E and T are in current production and the factory has been producing about a glider a month -both Antares 20 and 23 models. The 23Es have been selling well and there is only one Antares 23 position left available in 2017. The European charter companies have been buying them and using them with great success in Bitterwasse and Kiripotib. The performance of the glider has produced many 1000km flights and the reliability of the Lange electric dive system is unmatched.

As for building Quintus wings, from what I understand with the EASA certification rules the manufacturer can only build 15 aircraft before the model need to be fully certified. Lange built and delivered 15 sets of wings.

As for competition, Peter Harvey wrote a short story about flying the Antares 23 at the Worlds in Uvalde. Keep in mind he had not flown the aircraft before it's arrival to TX. He said " I am convinced the Antares held an advantage above 200kph over everything. Indeed, with three day wins, a 2nd and a 3rd place, during 7508km of flown tasks (in addition to practice) and the fastest speed ever in Uvalde of 161kph (!), it’s clear the Antares 23m has world beating performance."

http://soaringcafe.com/2012/11/peter...wgc-in-uvalde/