I don't get the Dayne hate. I get that we won all of Rees's starts, and that is certainly to Tommy's credit. But, Dayne and Tommy had virtually the same completion percentage, Dayne averaged more yards/attempt, had a better TD/INT ratio, and took better care of the football (7 INT's in 9 games vs. Tommy's 8 INT's in 4 games), and Tommy seemed to have been playing with a condensed (and less aggressive) version of the offense. And, even though Dayne is older than Tommy, they had the same amount of time in the system and basically the same amount of college football game-experience.
Also, even though Tommy's record as a "starter" was 4-0, he played virtually the whole Tulsa game. And despite the fact that that may have been his best game statistically (334 yds., 4 TD's), he still had 3 INT's, including the terrible throw that cost them the game (even if you disagree with the play call, you can't excuse the throw or the decision to make it into double coverage). So, I think it is a little unfair to point to Tommy's "undefeated" record as a reason you're more comfortable with him than Dayne. It isn't Dayne's fault the defense didn't start playing until he went down for the year.