The Chargers have the best D especially after they locked up Shaun Phillips who's only going to get better.
After that it's a toss up between the raiders/chefs/broncos.
It really depends on how drastically Bates changes things. We have enough DEs to have an average front and a healthy Warren will help. It's more of the same really along the front four with rotational players doing the grunt work.
I'm more concerned about our aging safeties. We definitely need to upgrade Ferguson.
That and DT are the biggest needs in my opinion. I don't want another repeat of last year where we were forced to slot in Ekuban at DT because the front four really wore down last year because we were so light with Ekuban/Dumervil/Lang.