I think some additonal info is needed.

Electric or Glow or Gas.

What size plane?

What type of plane? You asked for 3D. Many airplanes can 3D. Do you want a Scale looking plane like a Yak, Extra, Edge, etc? Profile plane? Or pure 3D plane. 3D planes are like the UCD, Flip or Hype.

10 years ago we had no choices, today you not only have choices, but different types of birds.

Once you figure on what type of bird you want and what size, it is easier to figure out. Right now with the generic 3D plane questions, your getting from a 40% bird to a Shock Flyer.