Haughty, reserved and fastidious is how Darcy is described in the book, 1moremum . Everyone at the ball is disgusted with his behaviour, at a time when rich people could afford to give offense wherever they went, and lower class people could ill afford to displease their betters. People were pre-disposed to like him because of his wealth, all he had to do was compliment a couple of people and pass a few pleasant remarks. It was his place to do that, or stay at home, but he strode around, speaking to no one, and displaying very clearly that he looked down on everyone present. Austen also said that Bingley made friends wherever he went, while Darcy was continually giving offence. He is a good man, but he has never bothered to learn small talk, or pay attention to people who are beneath him, unless they were part of his cohort. This is not just Elizabeth's opinion, it is the opinion of almost everyone who meets him. Elizabeth's character is left more to the reader to determine, but she is well liked by aqquintances old and new. She is her father's favorite, but she doesn't play on this or manipulate him to get what she wants, ever. She is ashamed of her mothes vulgarity yes, but she loves her and is respectful and obedient to her nonetheless. (Except on the subject of marriage to Mr Collins). Elizabeth knows that her upbringing has been slightly unconventional, but she is not ashamed of it, even when lady Catherine takes her to task about it. She is the smartest in her family, and as such her opinion is sought frequently, so yes she is confident and inclined to be opinionated, but she eventually learns that she cannot always trust her first impressions, and can admit her mistakes.
Pride and prejudice is my favorite book, I have read it countless times but this thread has prompted me to read it again. Cheers op.