Here are the advantages of Drupal
- Solid code base that is concerned with security
- Very easy and intuitive to use and administer
- Very modular
- It's easy to create a simple module
- It's fairly easy to install a module (I actually found that PHPWebsite has better install)
- Very large support community for both use and development
The only downside is that the forums suck and have no integration with phpBB.
I would love to look into it.. So far I have had no problems with the phpbb or nuke sites that I have done or worked on.. the current one that I work on has arcade, lotto, stats..etc. and those modules took soome work.. maybe Drupal would be easier in that area.