The key with the CG Ultimate is build light. I have one that I could have saved more weight on but I run a YS .91 Air Chamber on it and it still does everything a 1.20 powered one does, only it's doing it at a much lower wing loading. With smaller/lighter servos and composites for reinforcement, there is no problem getting a CG Ultimate below 8.5 lbs. In fact, Mike Cross use to get his down below 8lbs (I think they were 7.5 or something). He Dremeled a lot of the lightening holes even bigger and replaced heavy wood. I didn't go that far on mine