I'd say Cowboys, Cards, SF and Eagles in that order.
The Cowboys were supposed to be bad, but they're finding a way to hide defensive deficiencies with their offense.
The Cards are winning with a backup QB. Campbell being out is going to hurt them, but they have better depth than I thought and their LB corps looks good without Washington. They got the monkey off their back and beat the 49ers.
SF is winning ugly, but they're winning and their defense is 1st in the league at allowing the fewest YAC yards, without Bowman and A. Smith. We won ugly a few times last year as well......ugly still counts.
Eagles have some OL issues. They're also winning ugly, but still winning. I think most folks assume it's a matter of time before the offense starts clicking. Their defense is playing better than expected.
I also find it interesting how some fans on this board will castigate other fans for complaining about the Hawks winning ugly, but they'll write the Niners right off for winning ugly. We won some ugly last year as well, and it got us to the SB.
I'll never quit watching over my shoulder at the Niners.