Hallo Sašo

I have been doing a little research into the big Discus too and have read and heard a few comments about it.

Positive: Flies very well, Is a pleasure to fly in thermic conditions, the kit quality is good.
Negative: It is quite heavy and therefore needs speed (flying weight starts at about 7.5 kg), airbrakes(spoilers) are not very effective and need the aelerons to be mixed in (crow)for tighter slope landings.

A 90mm Retract should be fine. Overal comments are very good value for money and a good peformer.

Regards

Daniel