I will fly most things if they are offered but I would pass on a Horten IX.

John Greenfield of the UK based qhost squadron bulit one for a couple of turbines. Tailess and finless the control system includes drag brakes on the top surfaces, this combined with the lag time inherent with turbines makes low speed flight and landings a real challenge.

Pics here [link=http://www.largemodelassociation.com/john_greenfield_horton.htm]CLICKY[/link]

But I also get panicky when asked to fly anything overweight, underpowered with a rearward C of G.