I have the SIG Cap and it is very light compared to other planes in this size (H9 Cap more specifically). I havn't owned the H9 so I can't comment on the robustness but I can say with my Sig during setup I had quite a few epiphanies while learning to land this plane. Much different than the 40-sized things I'm used to. For one, with the 18x8 if you chop throttle, it will drop FAST (good airbrake!). I learned this on approach which I did my usual come in just right and chop throttle about 5 feet high. POOF, plane stalled flat and pancaked (so to speak) on the landing gear. Nothing damaged but my pride. A few more landings before I got used to landing 'under power' and nothing happened there. Perhaps on a nose-in it may blow apart but from the abuse I've put it through I can say it wont fall apart from even rough flying. After all, do we want flying tanks or planes? I'll take the plane, you can have the tank.

- Joe