iphone 4s. No question. Although Siri has some major flaws, it is still often handy and awesome and there is no way he could resist it. Plus, he seemed to be a mac guy and the way you can have absolutely every apple devise you own synced to one another from tv to phone to computer to ipad, etc. He would so be all over that. Did he have a blackberry in the first season? I can't remember, I just remember what ever it was it was the latest and greatest and I'm sure that trend would have continued, I doubt he was loyal to the blackberry, he just had one when it was the thing to have.