I don't dislike any of the big 3. I get a kick out of the fact that Djokovic is a mega troll and doesn't give a fuck. Glad to see him put all that ability together in the last three years.
Federer has the best all around game of all these guys, and I think he's shown more of an ability to win championships even when he's not at his best (see: the immense number of unforced errors in that win against Roddick).
Nadal is overpowering, and he's certainly the best clay court player ever.
And I don't hold anything against any athlete for their demeanor within the lines. It's hard to say how you'll react in the moment. I've broken my fair share of rackets, and I'm a shitty tennis player. Murray gets hate for yelling at himself constantly, but every athlete copes with high levels of competition differently. What matters to me is how the graciousness they displays as winners or losers. Part of the reason I've never liked Roddick.
Anyways, I think we're blessed to see an era with all three of these guys playing. Too bad for Murray, Roddick, the others of this generation.