The 1918s are pretty much the toughest on average to find. I saw a few at the National but far and away the lowest #s as compared to others I spotted. A 1918 O'Doul is definitely high on my want list. All of the HOFers and popular MLBers are desirable and pricey, but not necessarily rare. There are some players popular with ethnic collectors who will be expensive. I was sitting in on a discussion at dinner one evening with TBob and some other Zeenut gurus; they'd have the real insights into the rarities in the sets. I just like the pre-rookies...