I've been asking myself a very similar question actually. I hacked together a pretty basic website using Bootstrap, and I've been looking for a cheap and easy to use content management system so I don't have to worry about all the backend stuff.
From what I've read, there are actually 4 big names that are worth considering:
Joomla - From what I hear, bugs are an issue with Joomla, but other than that - it's a pretty good solution. I read on a forum that 90% of developers and designers pick Joomla over Drupal, so that's a good sign!
Drupal - Of the four, Drupal sounds like the one that requires the most programming knowledge. If you're looking to put something together in the least time possible, you can scratch Drupal off the list.
Wordpress - Free designs, easy to use, excellent for blogging - good old WP is defo a front runner.
Magenta - Someone described Magenta as an "eCommerce suite", which kind of killed it for me. Apparently it's great for dealing with a large "product range" - which isn't really what I'm looking to publish, so I didn't do much more investigating.
So, of the four, I've opted to go for Wordpress - mainly because I'm familiar with the brand, and it sounded like the least complicated of the four. However, it may be worth doing some research yourself to work out what best matches your personal requirements.
Good luck with your project!
