I was actually born in Cincinnati, so I have a long-buried affinty for the Red Legs. The rest of the NL is more a matter of whom I hate less. I liked the Expos, but can't abide the Nats.
Otherwise, I like the Mariners, Orioles, Jays (I like birds, apparently) and A's.
Against:
Nats
Yanks
Dodgers (this goes back to Tommy Lasorda and the old NL West days)
I hate every other team and all of the umpires...there isn't a umpire I like. Especially Jim Joyce. Put that over achieving pos in a Nats uniform and you will see a Southeast killing spree.