Not having read too many actual Avengers stories, I'm gonna go with Busiek's team, as I feel it has the best of all worlds (though I would put She-Hulk on that team as well, just because she's awesome and the only favorite "classic Avenger" of mine missing from the roster)
If I were making a dream lineup (this week), it'd be:
Yes, I realize Wiccan and Wanda are redundant. I DO NOT CARE. They're both awesome.