Ok I'm going to say something controversial. I like Murray!
I like: His Davis cup loyalty; the way he wholeheartedly supports other British players; how he turns out for charities such as for Ross Hutchins and Elena Baltacha; the fact that he is passionate about the game and his country; the way he is able to mock himself, for example for comic relief.
I don't like that his wife looks like a minor royal, but hey. Whatever... Sometimes he gets a bit grumpy but I think that's quite entertaining.