Glenn's been one of the better picks the franchise has made over the course of his career. Other than a freak debilitating injury, he's been extremely durable with the exception of the past season when a "normal" injury laid him up.
While I'm a firm believer that QB trumps all, I'm a bit surprised he's become such a "toss in" trade candidate for moving up. I know some its salary cap related, but the dude is a hell of a player. I hope the Bills realize this.