Redfin Solutions was recently quoted in an IT World article: "Joomla vs. Drupal: An open source CMS shootout," by Daniel P. Dern of Newton Center, MA.
The article is a shootout primarily between Joomla and Drupal. In sum, the article comes to the conclusion (granted this is our particular takeaway from the article) that Joomla is a great "starter CMS" and is geared more for designers and those who need to get a simple site up quickly.
By comparison, Drupal has a lot more extensibility behind it, and is great for larger sites that are more feature-rich, or as a platform for building rich web applications. With that said, one contributor mentioned that they often build smaller sites in Drupal so that they can "future-proof" them for growth. That is to say, with Joomla, once you grow outside of its boundaries, you may find yourself handling a costly rewrite or re-implementation. With Drupal, you can start with a simple blog but later grow and expand the web site.
Redfin's contributions included our thought that Acquia's presence in the Drupal game has secured (read: "put at ease") the minds of the enterprise-level thinkers. Acquia is there as a "safety net" who can always be a go-to for Drupal work if there's something that's above the heads of the in-house developers, or should all the in-house knowledge suddenly disappear. (Incidentally, Redfin can fill those shoes, too!) But Acquia has really put a big name on the face of this open source project.
We also contributed a piece about the vast number of projects and verticals that we've hit with Drupal projects over the years, precisely because Drupal is so developer-friendly, and has been from the get-go. Five years ago we chose Drupal in its 4.7 days because it was so extensible and developer-friendly. We continue to choose Drupal today for that very same reason.