'Heart of the Continent' feels rather generic, but I can see it's value as an effective marketing slogan.
Personally, I was hoping the 'Muddy Waters, Clear Skies' slogan would win out. It has character, and is just as genuine. Although, it may not feel "sexy" enough from a selling standpoint. It'd be cool to see it displayed at The Forks though, something similar to the '
iamsterdam' sign (I think that was mentioned before on these boards, can't remember when though).