I've flown Tom's 28% planes for the last 3 years now. I stepped up to the 33% size last August and couldn't believe how much better they fly.....It's very noticeable how much more stable they are....Once you fly one, it's tough to enjoy the 28%. [X(] I still fly the 28%, but I keep it for a back up plane.....The 33% stuff flies fine with the $600 3w80Xi, and I'm running 5945's on the ailerons, and 5955TG's on the elevators and rudder... Compared to 28%, you have 2 extra servos, the cost of the kit (ARF), and a bigger prop. That's it. 3W80xi is $600, same as any other name brand 50-60 cc power plant... I won't be setting up anymore 28%er's .