Well, I'm definitely not the biggest Zach Thomas fan, and I'm certain he won't be in the Hall of Fame, but I would take him over Bryan Cox every time. He was a much better overall player and a much better leader for the defense. And, you didn't have to worry about him taking a stupid 15 yard personal foul penalty all the time. Cox was talented, but he was also a hothead who was easily goaded by his opponents.
And I'd take Offerdahl over Cox too.
My thoughts exactly Bryan was a game changer sometimes good sometimes bad. To me Zach was so consistent in his play how could you not take Zach over Bryan. However, I think Zach had a better team around him over the years.....which doesn't hurt