I think I'd prefer Williams, though I wouldn't have a problem with Vilma. I think that with Seau maybe a year or two from retirement, and Zach slowing down a little, the LB corps needs an infusion of athleticism and playmaking ability, something that Williams can do. Plus, Williams is a natural OLB, where Vilma is a natural ILB. Vilma would have to play out of position here. I'm sure he could handle it, but other things being equal, it's best to take the guy who won't have to switch positions.