AFP is best in terms of flight physics accuracy, Realflight in terms of features, and the new Reflex in terms of scenery. The online flight feature, better flight recording tools and on screen transmitter are the main benefits RF has over AFP. It's physics engine is okay, and works for learning basic flight and traditional style aerobatics. If you don't think you'll use the features in RF though, AFP feels closer to the real thing, is far better at 3D type manuevers, and is cheaper to. Reflex is pretty, but I've heard the flight physics are not very good. Own RF & AFP, haven't flown Reflex.