Skippy,
I think you are looking for a different type of CMS. I think--and many may agree--that the marketing may be a little misleading for people who are used to Joomla, Drupal or WordPress. MODx is a CMS, yes but it is more of a Content Management Framework for devs to add and extend into virtually limitless custom configs for clients and projects.
If you were seeking a install and use, end-user oriented CMS then MODx is likely not for you. If you are a designer, developer or a combination of both that wants a great basis for CMS sites but don’t wan’t to get stuck hacking core or days trying to figure out how to make it do something it wasn’t designed to do and you have some rudimentary PHP/MySQL skills (I am far from an expert) MODx will work.
Personally, I think the homepage makes it sound easier than WordPress to get going but the fact is that it is easier when you want more from your CMS. Wordpress uses an arcane templating system. Building a template for MODx is as easy as coding a flat XHTML/CSS site and pasting it into the head and linking a couple of files.
The one thing MODx is in need of growth is Docs but as it moves toward 1.0 you will see much more enhancement to all areas. Keep your eye on it and find the CMS that suits your project.
One final note:
Modules/Addons in MODx come indifferent varieties, Snippets (php scripts), Chunks (of HTML) and Modules (application within MODx). There are tonnes in the repository and forums but they may be tricky to get used to until you get into the terminology.
Why not do a local install with the default DB data and play when you have time. Check out the Wiki, Docs and some of the forums to see that there are many reasons why we choose MODx.
All the best,
Jay