I've been searching high and low and am currently thinking of going for the Roedel 2.8m Fox.

http://www.roedelmodell.de/allgemeines-6.html

The difficulty I have had is finding something that is light enough to have reasonable performance under power but strong enough not to disintegrate, and big enough to still be a powered glider rather than a sport jet with big wings. From the blurb on their website about the manufacturing process, it looks to be reinforced in the right areas and the (composite reinforced) foam wings seem a work of art from the photos. Ideally I'd have liked composite wings and a little bit bigger but compromises had to be made somewhere My second option was a Graupner 3.5m Fox but it's not readily available and is probably just slighty too heavy.