RE: Best simulator for TREX 450SE
Phoenix hands down. I've had both Realflight and Phoenix and am sticking with the Phoenix. You can use any Tx pretty much from what I understand (I use my DX6i and DX7). They have a better selection of helis also. The one thing that Realflight has is Knifeedge where you can download new planes for free. I am sure this will come sooner or later with Phoenix.