I think that Neither is annoying. OK Tatl Was rude, But that was because she missed her brother, and she was mad that she was left behind and had to have the help of the kid she was bullying. Navi was just doing her job, she knew that Link was a kid, and he was exploring a Alien place in which he's never explored. So she knows that he will get easily distracted from the Big goal, she also worried about his safety since he was inexperienced, so she gave him the heads up when he needed it. But as far as I know, None of us would get through those games without them, they gave tips when you needed them, kept you on track, gave you the enemies weakness. They even were the Z-lock controllers! So I believe we would have a very hard time competing those games had it not been for them!