It sounds as your saying the older 72s won't fly much but a trainer [] i'm still using a futaba cap 9 on all 15 of my planes and they fly very well with no problems thank you. I have lost a couple planes to dumb thumbs and a loose crystal but that was also my fault [:'(] I'll stick with my 72s and i'm happy with it. I have 6 72s from my cap 9 down to a couple 4 channels and my 50 mhz radio and they all work great.