At $175 or even $200 I couldnt build a bird from a kit that flys as good with that kind of power as a Quest even though one needs to strengthen here & there for that kind of money. Still deciding to go light with a 91FX or a larger 4 stroke with the Saito 125. Won't have a YS in this type bird as the added power is just not needed for pattern/aerbatic flying. I have looked at the groovy, Zen, and others in the class, and one could buy 2 of these to one of some of the others and have just as good a bird.