My godchild, his older brothers love my toy collection. I let them play with only a few of my TFs- namely i let them play with the Machine Wars Prime, Sandstorm, RiD Scourge *bot only*. The others aren't for them yet. since i don't really collect the AEC toys, i let their dad buy em. and with the ball joints, they seem fine for the kids, but they still tear em apart like sharkticons at a Quintesson court date. Seeing how the oldest (he's 6) treated the Megatron vs. optimus 2 pack figures, there's no way in hades he'll touch any of my other transformers until he's almost a teenager. i was wondering which lines you really think are kid friendly. i get a kick out of them coming over and drooling at the collection and i kinda want them to appreciate how cool they are as they get older; i just don't want to sacrifice my toys in the name of "learning". For the moment, when they point at one, i will take it down, transform it a couple times, show em details and things, then put it back. and for some reason, i love telling them, "oh, you wanna play with my Alternator Hound? The Green Jeep? Grow up." Hell, i don't even play with him. I did give them an extra Ruination set i had with the terrible recolor- that tiger stripe pattern- but the dad has actually kept it out of their hands. he's been playing with it at work. so what line or which figs in particular would really be a good place to start with kids between 4-6 years old?