They are all overrated by Cowboy fans:
1. Choice is solid/good, but definitely replaceable. He is strong all-around and reliable to pick his way for good chunks of yards. But isn't great at anything.
2. Felix isn't as fast as everyone in this forum makes him out to be. He runs a 4.5 and it shows - he has gotten caught on long runs many times already. When he is 100% healthy/confident with fresh legs, he is extremely quick and explosive. But so far, that happens about 1 in 7 games (at the most).
3. Barber is about done. He can no longer break tackles, which was his differentiator. He isn't going to get any better, he still seems like he is trying to run over people, he just can't anymore. He will continue to wear down. I doubt he will be in the league in four years (I love the reaction I will get with that comment, but it is probably true).