I love the more mature and eloquent language in these books as well as the storyline themselves. The virtues and values are timeless and presented in a much "classier" way than some of the silly stories you will read in modern books. If you are a lover of the classics and classic language, these are a must for your bookshelf. I really just can't say enough good things about them. Start with the "Ann" stories. (In all fairness, we haven't started the Andy book yet, but if it is even half as good as the Ann one, it's sure to be a hit!)
So, if you are feeling a little nostalgic or ready to read something on a slightly higher level to your children, I would recommend starting with these.