What is the best sim to fly a t-rex

[WIIRED1]

Hi everyone know this will never stopped being asked but I am a begginer and I could save hundreds on the advise I get.

I bought a t-rex 450xl for real cheap and it has a Futaba T6XA transmitter. I've never flown before what simulator will give me the skill I need to fly it. Used it has to be under $100.00. I've also heard you can just download some softwares to be used on your own transmitter.

[CHCHGSR]

get FMS - its free. I did then moved to G3.5 - dumped G3.5 and went to Phoenix.
You can use your own transmitter with FMS, it's a very basic sim but you gotta start somewhere.

[WIIRED1]

Ok where can I download FMS where can I get it. Its good that its free because my budget just went to under $70.00. Plus which one would you suggest used pheonix and G3.5 are the same price. Thanks