RE: U Can Do 3D and servos
Well you don't need digital servos to make it fly well. I've been flying mine around for the last year with Hitec 525's on the alierons and 545'son elevators. On the Rudder I used a higher torque metal gear servo,a 615.
Which size U-Can-Do-3D are you hoping for? Mine is the larger size. If you get the samller one your seclection can change.
Good luck and have fun !!! [&:]