AFPD all the way...... They both should help strenghthen your skills. I dont like the way the g3 planes explode if you come 1 " from an object. For example if you are in a hover on AFPD and touch the rudder on the ground you can safely pull away and continue flying. this is true of a real foamie at low speed or impact, g3 the tail would break off in the lightest of touches.

either way they are just a stepping stone to improve our flying skills but in reality they wont help you figure out your lateral balance on your real plane etc. etc. , so just enjoy the experience...