The problem with the bears is consistency. They've been good lately but I don't really trust Rex Grossman, he makes too many mistakes. Rex Grossman can be really good one week and then do terribly the next. But luckily for the bears their defense has been able to give them plenty of opportunities to score.
I agree, the colts defense has improved. I have to pick the colts, the bears will have a harder time stopping Peyton Manning than the other QB's they've played against.