I'm flying a 3DX. I replaced the GWS can motor with a RZ-350 over this past weekend. The big difference for me was being able to run at WOT without a fear of burning up another can motor. The first motor infant mortality could have been with issues I had setting up the speed controller and radio throttle travel on my 10X. Vertical pullout from a hover was much stronger. It was very windy and will get in another flight this afternoon. Still, when it was down wind it had no trouble getting back to where I was. Removing the brushed motor and CC Pixie 20P and putting on the razor with CC Phoenix 25 made it REAL tailheavy. The brushed motor freewheels, adding drag to slow the plane down. The razor will "catch" and stop the prop (really cool in a dive). Something to watch on landing though. My .02.