Both are amazing and I hope to live in one someday. I'd prefer St. Paul, however. Many compare it to a US version of a European city. Muon2, can you confirm or deny?
I agree with Snowguy. It never struck me as European. It does have more of a sense of community history than Mpls, which is reflected in the aforementioned architecture. A great example of the communities and history of St Paul occurs every year during the Winter Carnival. I marched in more than one of those parades in freezing temps (it's at the end of Jan - early Feb) with hundreds of others.
Within St Paul I'm partial to the Como Park neighborhood since I biked there often when I was young.
I should have clarified; I meant that I've read before that the architecture and sense of neighborhoods is what people have compared to European.