RE: SIG Piper Cub
Sig definitely makes some great kits but their Cub is not a good beginner's kit. The reason I say this is there are no self aligning parts which can make it tricky to build a straight fuse and wing. The Goldberg Cub, for example, has a fuse that has a lot of interlocking panels making it pretty hard to mess up, and it's a much quicker build as well.