If it was my choice, I'd go with SportNation. Gotta love that they'd steal ESPN's online property name right out from under them...
IMO espn needs some competition. I don't even know how they call themselves investigative reporters. Is it so hard to just talk sports? Not about what kind of toilet paper barry bonds uses? The only ESPN channel I can tolerate is ESPN news, but that isn't all that great to watch either.
Has to be SportsNation. IMO the other ones are too hard for Americans to recognize and associate with.