They use spectrum radios now. No more tagging the radio with a flag of the channel your on. Spectrum searches for a unused channel in seconds and locks on. U can have a hundred flyers in one spot and not worry. Ok radio is about $300, cheap radio $50. You can get a stryker, screw painting it and have fun for little money. Litho batts are a little expensive. u can buy a Stryker ready to fly with everything under$300 but radio and components will be junky but suitable for a monthly flyer.