First post here. My son (4 yrs old) caught the Cybertron Series awhile back, and now is smitten with TF. Ive been buying him Cybertron toys, and picked up some lots of Energon and Armada. Tf first came out when i was 10, so now i'm considering collecting a bit for my son. What's out there now that he would enjoy, yet is available enuff that i could buy 2 (one to collect, one for play)? I see alot of ppl mentioning Alts. Are those the Alternator line i see at Zellers near my house? if so why does everyone seem to like them so much? I appreciate all advice.