I preferred Cerny to the others because he was more informative, less PR crap.
Spencer was out of the question right away cause I just can't stand the guy's haughty attitude. And presenting Killer Instinct, a niche title, using arcade sticks that aren't even part of the console and cost over 100$ a piece... to sell the XBO was really not a good move.
But at the end of the day, Reggie was the most charismatic of the 3 (although he wasn't really informative) and he presented a new title from a franchise that most people actually care about (Mario). And Game and Wario actually showed some of what the pad is about. So I voted for Nintendo.