For creating common user modifiable site I've been forcing Wordpress to do the work of a CMS. It's worked and the back-end is purdy but it's just too hacky for my tastes. So I'd like a simple CMS that is easy to customize and add dynamic content to.
Right now it looks like modx is my best bet. I've tried Joomla a while ago but it was a real pain to customize and the back-end was not intuitive.
Basic requirements:
If it doesn't have these, then I doubt it's more fit than modx.
I'm a huge fan of modx, I don't have much to add other than to say if you are happy with modx and it does what you need then stick with it.
I just haven't come across anything as easy to use for a developer. The template system, ease of creating your own snippets if you can't find what you need already, everything just seems to fit from a developers point of view.
I have also had no trouble training clients to use it.
The main problem with modx for me is that I haven't really been impressed with any shopping carts/store solutions for modx yet, but I guess it depends on what kind of site you want to make.