There are a host of content management systems that new websites can use. my advice to a new customer is that unless you are updating your site more than once a month then don’t bother with one. A solid brochure site will do the work that you want for your site and encompass all that you want to do with your product.
However if you want to keep an active regular stream of information on your company going out into the market then a CMS / Blog can help. I have done systems using WordPress, Drupal and Joomla for customers and they have all reaped the benefits of each. Think however before you take one on board or pay the money to implement one.