I have both sets of plans. About the only thing in common is the general appearance and the name. The Midwest version is a much more "modern" playout, thicker wing, sheeted LE, different nose and tail moments.
If you have something you are specifically interested in, let me know and I can dig out the plans and look. When making the choice, I built the Midwest version and it has turned out to be a pretty good sport plane, not a competition quality PA plane. It will fly the whole pattern, but really doesn't turn well enough.
See "Trimming my Stunter" for more.
John