Best Player For a TTM?

I've been looking to send some fan mail to a few players to get some autographs through the mail, and I was looking for a few of the better, or quicker signers. This is my first time ever doing this, and made the mistake of sending my first two to Joe Mauer and Barry Zito, which I will likely never get back. I just sent one to Brett Gardner, I'm hoping to get that one back eventually. Anyone know a bunch of players who would sign that are still active players/managers in the game today? Thanks :).