love the yak, its a keeper, i didn't like the funtana at first cause the cg they recomend makes it tail heavy, noseing up hard at slow fight and climbing while inverted, i fixed that, couples kinda hard in knife edge, but it is fun to fly low, its not really that i don't like it, i just like the yak better and don't need 2 similar size planes meant for the same flying, imo the yak does everything better, so i figure i'll lose the f90, but i still want a plane to get daring with and use some stuff i have, so the ucd sounds like its the way to go, you can tell by the pick the f90 was good for some stuff