RE: What is the best ARF trainer
You will get many different answers to your question as there are a number of good trainers out there and some folks have had better luck with a particular trainer than others. I had great success with the Hobbico Superstar 40 Monokote covered ARF. It was also easy for me to make repairs to this plane. (Unless your are very good or lucky, you can expect to make some repairs before your are done training)
Hope this helps.
Steve