1st base is deeper by far. Just look at it
Hafner(not sure if he's eligible in some leagues)
About all of those guys there(the top 11) are from 1st-6th rounders. And there are plenty more a tier lower.
Here's some 3rd basemen
There's the group of 3rd basemen that will probably be going from 1st to 6th round, some are on the edge of going around there(Glaus, Blalock, Ensberg) plus it's a huge dropoff after these guys, you've got them then some guys like Cantu, Chipper, Mora and then it's all WW trash.