RE: I give in!
You mentioned a Cub, as I recall the Great Planes cub comes with pretty much all the hardware. Great Planes and SIG are two good choices. I noticed someone mentioned going to the web site and you can read up on anything else needed to finish the kit. I have built and flown both the Carl Goldberg Cub and the Great Planes Cub, the Great Planes Cub is an easier build but I thought the CG Cub is a better flyer. They come with hardware but I change the controls to items I like. I don't care for Nyrod controls so i don't use them. None of the kits come with things like fuel tanks and spinners or tires/wheels. Just go to the Tower site and read up on the plane kit you like.