Before, i was making websites without CKK... Now i need to make sites with a lot of different types contents and categories, and to display (order / filter / appearance / listing...) them in a lot of different ways. My need was a powerful advanced search and versatil modules to filter and sort almost everything.
This is not a "simple as a click" CKK, but i'm really sure it's the most powerful one.
The support forum is quick and efficient, i can tell you, because i have several specific needs, and all request where solved (For developers, you can make almost everything you need in the great templates tool).
Flexicontent is not know enough!