Hi
I see no one has replied but this could be that, like me, they've never used Drupal, so to give an answer to your question might be difficult. If I was you I'd put "Joomla vs Drupal" into google and see what comes up - I'm sure this has been looked at by other people.
I've been using Joomla for several years now and think it is versatile and flexible and can do pretty much everything that I expect it to. There are learning curves involved, of course, but I think you'll get to know it pretty quick once you get started.
Hope you do the swap and enjoy!
