You can quote me on this: Houston is making a big mistake. Don't get me wrong, Williams is a heck of a player, and most years, he's worthy of the #1 pick. But not in a draft with Reggie Bush. I think Bush is too explosive to pass... he's great running, catching, or in special teams. Len Pasquerelli, who I like, agrees, calling it a "Texans Sized Mistake."
When you are as a team as bad as the Texans have been, you need to make solid football decisions, and eschewing a playmaker such as Bush, who will have an immediate impact on the league, in favor of a guy still in his gestation period is a dubious call at best.
I understand that the Texans want to build a great defense, but I just can't reason passing up Bush. Michael Irvin gets a lot of flack, but I thought he said something that made good sense. One way you can make a defense better is to keep them off the field. If you can build a great offense (with the Texans would have the making of with Carr-Bush-Johnson) it can force the other team to be 1-dimensional, or keep them off the field for longer periods of time.
Anyway, we'll see how this plays out obviously in the years to come. For now, count me in the crowd that thinks Houston is making a big mistake.