All of what Brian said is very true, but, if you go for the 52 Topps set, you need both Mantles
I've given thought to the 52 set myself. I have both the Mantles out of the way. I really like the Pafko and want one anyway. I just cannot justify spending all of that money on high series cards of players I don't know. If I blow $100 on a card, it might as well be a Mantle.