I second that! ALL of the Ultimates are great fliers! I've had a DP Ult 40 with a YS63, a CG kit Ult with a YS120, a CG ARF Ult with an OS108, a DP 120 Ult with a YS140, and I now fly the 30% CG Ultimate with a Brison 4.2. Each was a GREAT plane, and I kept moving up as my tastes got larger until I recently started flying my big Ultimate. I can honestly say that the Ultimate 40 flies just as good as the 30%, and all in between. The only real difference is the size of the package you have to transport to the field. The little Ultimates were a lot bouncier in wind, but their flight characteristics were just as great. I've really never flown anything like the Ultimate and the plane has a unique feel to it. You always know what end is up with an Ultimate and they are the easiest to land biplane I've flown yet.