FAI-F1D
Free Flight Indoorist
Apparently Hacker is now making a DLG. Currently appears to only be available in Europe, but Armsoar is about to become a distributor. No idea whether it's better than the Libelle, though it wouldn't take much to meet that requirement. It's a bit of a heavy rascal, though. Decent price for plug n play, though the HK 1M composite DLG's aren't much more expensive ($192 in US East warehouse) and might fly better.
http://www.hacker-motor-shop.com/e-...=&a=article&ProdNr=10801000&t=9&c=8428&p=8428
https://www.youtube.com/watch?v=tlwTbD4j6Hg
http://www.hacker-motor-shop.com/e-...=&a=article&ProdNr=10801000&t=9&c=8428&p=8428
https://www.youtube.com/watch?v=tlwTbD4j6Hg