Why is Pride and Prejudice SO Wonderful?

Every time I read it I feel like I see something new to love about it, and every time I'm sad when it's over. Now that I have I don't know what to do! I had planned on reading Life Mask by Emma Donoghue. However, I have read in so many places that Georgette Heyer is the next best thing to Austen, and I have borrowed one of her books from the library. So I wonder, should I go with my original choice or begin Faro's Daughter instead?