What to get, Rock Band or Guitar Hero? I knew this day would come. After owning a Wii for maybe a month, my wife now wants a singing game. Too much time at a friend's who has both and we play them regularly. I'd like to get one that's more singing oriented, we're not so interested in playing the instruments too. Ideally we'd like to get Singstar, but I know that's out of the question for the Wii. We've looked at American Idol and a few others that look very kid oriented like High School Musical and the Disney titles. Which brings us back to Rock Band or Guitar hero. I've looked at the IGN review for both and they seem very similar. Does anyone have an opinion on one over the other? And any recommendations on microphones would be welcomed too. Thanks!