Reluctantly I choose 1970 Johnny Bench $7,689,136.
Now that I have a catcher, I'll speak my peace on the URL thing. I personally don't think doing this provides any advantage whatsoever. Especially in a high salary league like this one, playing a player out of position would always be a major disadvantage, especially catcher and infield. If an owner makes the mistake of getting to a point where there are no catchers available, I don't see a problem letting them start a position player at catcher. In fact, I would love if all of you would play position players at catcher! It really wouldn't be any different than someone choosing a 50 inning $200,000 player as their only catcher and then playing a non-catcher at catcher all season.