That's a difficult question to answer without knowing what content you're going to put on the site.

For a simple 5 page site + blog with frequent updates, I'd say Wordpress. There are lots of plugins and templates are very easy. It's the only blogging software I'd recommend for a basic blog.

For a site with a lot more content, Drupal is a more robust option. It's really easy to expand with modules for blog, forum, shopping cart, etc. I find the template system more confusing than Wordpress.