I really have no issue with any type of battery being used to power the RX and servos. I have models that use NiMi, LiFe and LiPoly. I just bought a couple 7.4V 5000 MAH hard case LiPoly's to go into my new 40% Extra. I will balance charge them every time and if anything unusual is noted they will be removed from the airplane and given a very good look and either replaced or if deemed OK installed back into the airplane. I'm the kind of guy that wants to take advantage of everything that the manufacturers provide us with. This includes balance plugs, they are there for a reason. My newest pylon airplane required the RX pack ( 6.6V LiFe ) be placed 4" behind the wing. I will be installing a balance plug extension. As for flying with ones father, I envy the guys who can spend that time bonding with theirs.