An Embarrassing Confession

So, I started reading Jane Austen's Emma on Monday.  I'm about a third of the way through. And...I'm not really loving it.  The characterizations seem muddier than in Pride and Prejudice, the humor less well-drawn and sophisticated.  But I've read Pride and Prejudice so many times that I can't really remember my first experience of it.  Help me, folks.  Am I missing something? Is there a specific form of commentary Austen's making?  A plot twist I should be looking for? (I've seen the most recent movie adaptation and Clueless, of course, so I'm familiar with the broad strokes.)  A particular twinge to the humor?  I want to be enjoying this.  I want to know if I'm doing something wrong.