Best thing to do when trying to decide which DDL Script is "best", is to compare features.
Which DDL Script has more features?
Which DDL Script has better features?
Which DDL Script has more secuity features?
Which DDL Script has features tailored to my personal taste?
Which DDL Script allows customization, editing, addons, and has complete easy-to-install skins?
Which DDL Script will
make me more money $$$???
Well, you get the idea. Compare features.
A MUST DO -- try each script, see which one suits your taste better -- use that one.
Lastly, just want to add (unbiased) that DDL CMS is designed with years of SEO optimization in it, built into the script. Not all the features are listed on the site either (too lazy to update the list right now, there's just too many features) see :
http://www.ddlcms.com/features.php -- there's also some screenshots available.
Btw, here is the list of updates coming out in the next release (no ETA yet):
http://www.wjunction.com/showthread.php?t=9845