After tried all free extensions on the first page I saw this one and it's really the best I've found! It does what it have to do and have many options! Very nice also that images can be cropped.
Thx a lot for this great extension!
I managed to publish it just as on the demo site, except for 2 things:
1: the size of the 'caption' is too large, it comes to the half of the images.
2: only the title of the content is 'clickable', instead of the whole image(only in IE8, FF works fine).
As mentioned, easy to configure, but only a few bugs that doesn't make it a top module!