What is the worst lemony snicket book?

After finishing the series, it did strike me that there is a marked gap in quality between books 3 and 4 and the other 10, and a lot of people who I've spoken with about the books seem to agree.

So for me, the worst is The Wide Window, closely followed by The Miserable Mill.

The best is The Slippery Slope (not just my opinion, fact).