I had Real Flight G2 and just got G4. It's night and day, G4 is so much better. G2 was very lame compared to G4. I must say though, I still think the way the airplanes fly are not realistic, in fact it seems to fly just like G2. Now I never flew G3 or G3.5, but I can just imagine G4 must be about the same. Over all, G4 graffix are awesome. They spent all their efforts into making everything crisp and life-like, the photo fields and airplanes look great. I'm just disapointed in the way the airplanes fly, super easy. My 15 year old daughter took off with the extra and went right into a hover followed by a torque roll. I couldn't believe it, she doesn't even fly my RC airplanes. She thought it was fun, and I thought it was a disapointment! It has tons of great features though along with great flight instrustion, so that part will be a big help in learning maneuvers and 3D. At least I can look forward to getting the stick movements down and enjoy awesome photo fields and such. I don't mean to put it down, but maybe with tweeking the airplanes and moving the CG back and stuff like that I can get these planes to fly more realistic.