I had a 40 size Sportster years ago. Fast airplane. And a slow one too. That was a really great model. I have a CG Chipmunk in the fleet right now. ITs a good honest plane as well.

Chipmunk..............way easier to build. Art Scholl, the pilot that flew the Super Chipmunk in the 60's, 70's and early 80's was THE airshow pilot of his day. He died filming TOP GUN. And of course, Carl Goldeberg was a hero to many of us in aviation for his contributions to models and full scale design. So you get two heros in one airplane. It does all of the old school stuff great. Lots of plywood in this kit. 7lbs

Sportster................a little more difficult to build. Higher performance. One of the fastest sport models around. Also capable of very slow flight. Very light weight. Its the Chipmunk on steriods, but without the history. Almost entirely made of balsa, very light, about 4.5lbs.

Build both !!!