I can't really comment on any of the yaks, but I do have an older Goldberg Sukhoi kit. I got it used as it has been kind of passed around our club, seeing as it's about 8 years old. It had a saito 120 in the nose, but it really lacked power so I put a saito 180 in with an 18x6 prop. It flies really nice, but it's more of an imac or presicion flyer. It can do basic 3D stuff, but if your looking for something that will do rolling harriers down on the deck, you might want to check out something else. It is really stable in harriers and at low speeds. With the 180, it hovers at a little above 1/2 throttle. The pullout isn't insane, but it is enough. Overall it's a great flying plane, lands like a trainer, but I wouldn't reccomend it as an all out 3D machine.