When Andrew first got started with his electric Brio, he had a laser temp gun that worked just fine (don't remember the brand). However, the temps he was getting indicated the need for some ductwork which he added. That caused a secondary problem in that it was darned near impossible to get a good reading off the motor because the duct was always in the way of the laser sight. He showed up the next day with a Raytek MT-4. I suspect the one he started with was just as accurate, but the MT-4 had the laser closer to the gizmo on the gun that actually takes the reading. Worth considering if your plane of choice is going to need some ducting to keep the motor, controller, and batteries happy.

Verne Koester