Go with the Cardinals.
They have the 2nd most World Series behind the Yankees but you'd never know it.
A relatively small market team that doesn't buy championships.
Not a lot of guys that shoot their mouths off.
Plenty of grit (see Eckstein)
Great fans who really support players based on effort more than performance.
When former players come back they almost always get an ovation.
Whats not to like?
(I know the Cards arent perfect and some people really have problems with Larussa, etc, but I'm from Saint Louis so sue me.)