What do you think is the best 3D sim?

AeroFly 5.5 best box stock SIM for 3D , then RealFlight if you download custom 3D planes , then Phoenix. I have them all and have no issues with any of them. RealFlight is the best if you like to play with settings plus if you become an advanced user design your own 3D monster. Comes down to how much you want to spend and how much control over the program you thing you need. RealFlight has the best games and extras like training, plus online multi player, you may not want to just fly 3D.