It's always been Minnesota for me - partly because I grew up in Bears country and my family are Bears fans, partly because Walter Payton was my childhood hero, and partly because I've almost always been able to at least respect the Bears. Vikings, I've always hated them. For one, I despise the color purple (when you're a kid, these things matter), for another, I despise dome teams, and since the days of Bud Grant the Vikes haven't even been a team I can respect.
Since I married a lifelong Vikes fan (and because I do respect guys like AP and Winfield), my vitriol has cooled some, but I still hate the Vikes. Put it this way: I always want to beat the Bears, but with the Vikes it's not enough - I root for them to be miserable and lousy every single game, whether they're playing the Packers or not.