The Avistar is one of the most functional trainers that I have seen. Many of us get bored with trainers quickly but I think a trainer actually forces you to "fly" the plane. For example ...you need to coordinate the sticks with the slower rolls as opposed to just hammering the stick left or right. The best pilot in our club maidened a kids Avistar ....did a 4 point roll on the climbout into a rolling circle....I bout crapped my pants. He put that plane through its paces....the only thing he didnt do was hover it.