The iTerro is actually larger and heavier. I know, I just had to decide which to buy and chose this product for that very purpose and the fact that the newest versions iTerro does not recognize color for shading. Trios does.
As someone who works in the orthodontic field and who has used the iTerro, this "wand" looks looks horrible uncomfortable, not only to hold but to also have placed in your mouth as a patient.
+Katie Nye Trios 3 is a little wand smaller thjan everyone else's and had a pod that it rests on, has the equipment instead of a handle, but you can get the gun, why would you though. Imagine the handle and surrounding gone.
