If you get either an RTF package or a radio that has a trainer option, you can get a cable on ebay for $10 which will link to your computer, and it comes with a free full version of FMS flight simulator. This way you can get a less expensive plane (than the Nexstar RTF) and still get flight simulation experience. It's not as great of a simulator as the G4 that comes with Nexstar RTF, but it works.