First, in reality, there is no choice because we just gave Romo a huge load of guaranteed money...he is our QB...period. Matt Cassell will bring a lot of loot in free agency from a team that needs a starter...I'd expect Minnesota to make a play for him.
Second, Matt Cassell is having a great year for a backup, but let's not forget he's in an offense that carried that team to 16-0 and records for points last season.
No offense to TO, but Randy Moss is still the greatest WR in the NFL, hands down...no one can cover him. Then you have the incredible midget man, who is so super quick, no one can really cover him either, especially not in the slot. Cassell throws a lot of short passes that get turned into long scores, and he throws a lot of deep balls to Moss, who still finds a way to beat double coverage and catch anything up in the air.
Cassell is a great story, and I hope he signs for megamillions, but he won't find it so easy with his next team. It won't be Dallas...right now Peyton Manning could be a free agent, and Dallas couldn't go after him.