Though I read
(maybe on the Aux Sailplane Assc news group or the DG owner site) that
the flapped ships do much better. It is interesting that DG had
problems certifying the new non-flapped DG-1000 as a self launcher and
for now its only available as a "turbo" like the Duo Discus. I follow
the manual and climb at flaps +10degrees at Vy 49kts.

Graham Beasley DG-500M Hotel Golf
home.comcast.net/~grahambeasley/dg4sale

DG have always intended to produce a selflaunch DG 1000. It is going to have
the flapped wing for the reason above. They are just searching for the right
engine. I think they prefer to go a four stroke at the 60 to 80 hp mark. (
If you know of one that would suit let them know :-) The turbo version is a
result of asking customers what they would prefer/buy.
Paul