I really enjoy buying big lots that have a nice junk of items I need. Of course the downside is the duplication, but if you can trade to fellow collectors or resell them, then it's not so bad.
Mike Piazza supercollector: 4,267 different Beckett items
Also collecting John Franco, Eric Karros, Al Leiter, Brandon Nimmo, Todd Pratt, Robin Ventura, Turk Wendell, and Todd Zeile
Also collecting John Franco, Eric Karros, Al Leiter, Brandon Nimmo, Todd Pratt, Robin Ventura, Turk Wendell, and Todd Zeile