i started with an avistar end of last year. ive only got a 40la and with a 10-6 it was faster than i needed for training. use the larger diameter- smaller pitch for sure with a .46ax. ive read too many posts of avistars pulling up in a dive and folding the wings. btw the avistar is the best trainer imo because you can do quite a bit with it if you max the throws. if you have any other ? that i could help with let me know.