I am sure that this question has been asked before but I searched and didn't find it.

I would like to learn to use (so that I can offer it to my clients) one of the CMS packages. I have had brief looks at Wordpress, Joomla and Mambo. I have been told that the best I could get to grips with (by two different folk) is Drupal and Modx.

My problem is that I don't want to spend hours and hours wading through all the options, having to learn each one, only to find that I might have actually missed the real best on offer.

I am not looking for it essentially to build a website with as I prefer to do that myself, but more and more I am being asked by clients if they can update their own info. So the CMS would probably have to be able to integrate with my built website.