Drupal is a publishing platform shaped by our energetic community and now bursting with potential. It can be used for thousands of free designs and plug-ins for swift site assembly. The developers like its well-documented APIs. The designers like the flexibility. And the site administrators like the limitless scalability.
Drupal 7 is a better idea if your site uses contributed modules because there’s where all the development is, the new generation of work is happening in D7 only and isn’t getting back ported.