The BEST Dungeon Crawl Classic by Goodman Games Is:

[Angel Tarragon]

I own all of the modules listed, but never ran any of them. My most favorite read from them is Crypt of the Devil Lich.

 

[JoeGKushner]

I haven't seen the last few but I voted foe the Crow God. Length is better, price ratio is better and there are some great tricks and surprises along the way with some great' non' magic magic items.