Roger,
After MANY hrs of reading, searching forums and asking everyone who ever flew a model airplane for opinions on cubs, Ive come to a certain conclusion, It just doesnt matter. If you ask 5 people you WILL get 5 different answers.
One common I did get was to stay away from Nosens unless you really want to get into reinginering.
Great Planes AND Sig make a great kit, unless you make changes yourself, I believe youll end up with basically the same airplane which will fly wonderfully.
Im building the Sig clipped 1/4 scale cub (when it comes in) I guess mainly because Ive built 4 Sigs already (not cubs) and feel like I kind of know what to expect.
Your a modeler, youll enjoy building it, now, go get it and have fun!
Roger

ps
I dont mean to imply that Im not truely gratefull for all the feedback that so many folks have given me here, in fact, its given me the confidence I needed to make a choice that I know Ill be happy with.