Depending on what kind of flying you are into, both could fly best!

The Freestyle is more of a pattern aircraft. The controls are crips and precise, there is no roll or pitch coupling with KE, and it just flies like a pattern ship. It will also torque roll, flat spin, KE spin, and snap will better than most. When it comes to all out 3D, it falls behind.

That's where the FunFly picks up! It's for the real crazy 3D pilot who wants a great FunFly. They are incredibly light and will 3D great. I have heard a few reports of them almost being too light and just stopping in mid-air!