Got both the Vectorflight Extras and man are they awesome. The foam core wings I believe are actually better than rib and film ones I have flown and fly very stable and precisely. Also the cowl although plastic has held up without a crack or dent after numenrous minor hits. It seems to be made from a really strong plastic, definately not like the cheap ABS. However the belly pan on one cracked after about 8 months of flying and I replaced it with a scrach built. I have got only praise for them and I really dont know how they have them priced so low while making them in North America, anyways i am not going to complain about that! By the way, the fuel tank and wheels supplied were Dubro and the engine mount was from Dave Brown, they are absolutely trouble free.