Now this is interesting. I have built a Sig Something Extra and thought kit, wood etc was all very good. I have recently purchased a GP Ultra Sport + (new kit just released) and it appears to be the perverbial piece of &^%&. The wood is horriable in the kit. Green colored and heavy. Plans/instructions look good and I am sure it will fly well like most GP planes do. It will just be more expensive and heavier then Sig kits. Already the dreaded "Tech Notices" are poping up on the kit. Problems with the stock landing gear I guess. I just wish GP would figure out how to get it right the first time.
My delema now is I want to build a Cub. GP has there 40 size and Sig has there 1/5 scale. The sig is a little bigger (still in the .40 range) lighter, a whole lot more features, and costs less then the GP. My question is how do each handle in the air.