I've been riding the Specialized Armadillo. They make a number of different models. I think that the ones I have right now are the Crossroads. I just received a set of Armadillo Nimbus, though, and will be putting them on this weekend. I'm thinking they'll make my ride a bit faster, since I'm on pavement all the way.
By the way, Specialized customer support is outstanding! I had some wear on the sidewalls of my Crossroads and I wrote them to ask for some suggestions about what the cause might be. Not only did they provide some valuable suggestions (turns out that my rear wheel wasn't true), but they're replacing the tire and sending some extra tubes at no cost! That's some mighty fine CS, there, Lou!