Align 450 Sport v1. Here is the Helimax I've been flying all the time in Multiplayer. It's tuned to mimic my own Sport. I did all the weights & measurements to match... and then tweeked to exactly match flight characteristics. I took a vid of my real bird doing stationary flips and played it over the sim. I knew the cyclic was correct when the sim heli would stay sync'd with the vid. Same for piro rate, headspeed and bogging in pitch pumps. This is really as close as I could make it to my real bird. Makes for very useful practice. Enjoy!