I am a big NFL draft follower. I watch a lot of prospect videos (I won't say "film", because unless you are watching a player on every play of a game, you aren't watching film.). I get a pretty good feel from watching some players and when you do that you get a pretty good feel for which reporters to read.
Check out this prospect ranking.
I love the fact that he points out exactly what he likes and doesn't on each guy and on the prospects I know it matches my opinions for the most part. While I do suspect his knowledge of the QB position is not maybe up to the level of his work on other positions, I will be adding this guy to my list of regular reads. He is very good.