RE: Best RTR trainer under $300
Don't forget to budget for support gear..... that will add at least $50.00 to the cost of a plane. If you're just starting out, the Superstar would be a better plane, but the Avistar is certainly more capable, just a lot faster and it lands differently.
No matter what you get, be sure and let one of your local clubs look it over, and GET AN INSTRUCTOR!
Welcome to the hobby...
Andy