Firstly, there has been a lot of complaining about the packaging to this set in other reviews. Well yes, it's fairly bad, however not nearly as bad as many have made out. I just don't understand why they didn't keep the box style from the previous three or four seasons.
The real reason to potentially avoid this set though is the dramatic fall in quality from previous seasons. My personal opinion is that The Simpsons "jumped the shark" in season 10 with the first poor episode to have no reason to exist except celebrity cameos. ("When You Dish Upon a Star") However, in season 11, we are given an episode that the writers actually have no idea how to finish.. instead they literally stop the episode in its tracks and end with some very lame satire aimed at the Fox Network. ("Missionary: Impossible")
There are some laughs to be had here, but they are few and far between. This is certainly the last Simpsons season I will buy.. though it goes without saying that Seasons 1-9, and probably 10, are absolutely essential buys.