Far and away, it's the Chargers. Just because the Pats have beaten them the last three times(we all know how close the first one was), the Sparklers have the personnel to go toe-to-toe with the Pats. Ultimately, it's comes down to coaching, which is way to the Pats advantage.
bolts have upgraded a weak WR corpse (sic) making them more formidable. The coaching staff, admitedly a weakness, has had a year to improve from bad to mediocre. They're a better team in 2008 and they have a score to settle.