The Astar is a little more comfortable. You strap the 407 on and wear it. In my opinion The 407 feels like it's part of you instead of sitting in an Astar. Don't worry about tail rotor authority, it has plenty. Hydro off is way easier in the 407. We practice hydro off to a hover and it's simple. Enjoy the 407 it's fun to fly, hauls a good load and if maintained properly more reliable than Astars.