Timber: I've been to the BBHoF once and to two Nationals (Anaheim and Chicago). My wife and I had a grand time in Cooperstown and I had a blast at both Nationals, particularly Chicago in '08. Both venues are wonderful for pretty much completely different reasons - awesome baseball history in a charming upstate NY village on the one hand, vintage cardboard in orgasmic proportions plus the opportunity to hang out with legions of charming cardaholics on the other. It's a tough call. If I had six months to live and could only do one or the other I wouldn't want to have missed the Mecca of Baseball, Cooperstown. Swimming upstream here but that's my two centavos.