it' not as insane as my last plane but that was a funtana s40 (before x50 was out) with a saito 82 or 91 in it. that thing was on the verge of being just plain retarded and ended up shaking the plane a lot that it would've broken from that....if i didn't crash it first . but i got the 90 (excuse for a 15 year old you dump 1500$ into another plane) and i think the ys110 is a very good motor for it. It is not going to have the same power as people putting an os 200 in it or something but since it's lighter it's probably better for 3D. If 3D to you just means hovering and pulling out like a rocket then maybe not the right motor. it will pull out with authority but not a rocket. more power than that is not needed because all it will do is the same thing a little faster and probably shake the airframe a lot and weaken it. Go with the 110. Check out my video on youtube [link]http://www.youtube.com/watch?v=smaw2tYHZ0k[/link]
that is mine with a ys-110. i don;t think it shows it pulling out but it hovers just above half throttle. And it would hover lower but i adjusted my carb setting so thet it is more linear. About 75% of your power comes when the carb is 50% open. I adjusted for this in the radio so that 50% stick is 50% power not 50% open carb.