I love watching them both. They're both humble, great champions and ambassadors for the sport. I would think the reason most people prefer Federer (if there's

I love watching them both. They're both humble, great champions and ambassadors for the sport. I would think the reason most people prefer Federer (if there's even concrete evidence to back this up -- has anyone really done a survey of this question?) is that Federer plays the most aesthetically pleasing tennis. It's obviously subjective, but I suspect most people who like tennis like Federer's elegant style of one-handed backhand (which most plays don't do nowadays), his movement, his serve is devastating because of it's accuracy, his fakes and drop shots. It's just elegant to watch. Nadal of course plays elegant and great shots too, but just less so in my opinion. Nadal has got a lot of wins by steamrolling his opponents with power and athleticism, particularly on clay. I'd rather watch Federer destroy an opponent than Nadal, basically