there just isn't that much difference. i've flown the kyosho calmato, WM skyraider, sonic 30's and some very cheap china trainers and they have all been decent flyers once trimmed. as long as you don't try to pylon race them, trainers of the same size pretty much fly the same. i think the WM skyraider, which is not on the list, would be my suggestion. it's cheap, very easy to built, and a delight to fly.