Well I am already using wordpress and I have pretty much mastered that..>I am looking for a new CMS for an actual website instead of a blog... I found a joomla book that I have bought and will read tonight...so we will see how that goes... Anyone in here use Mambo, I bought a book on that also.
mambo and joomla are pretty much the same. I would go for drupal. It has a built in good rss aggregator to get all the feeds from your other sites. It has a forum in built which is easy to use. Its seo friendly out of the box. If you are thinking of expansion in the near future drupal will be a good start. The learning curve is steep but it will help you in future.
I also would suggest that Drupal might be a good alternative. About a year ago I moved my blog to drupal...I am pretty happy with it.
I have installed joomla! and will be messing with it for a while...I installed Drupal and had soem problems editing it...probabl because im a hardcore noob or something. Anyways, I saw what you meant by the RSS stuff in it...shouldnt it be pretty easy to add that to Joomla or is that like a big boy install??? I hope its easy because I really use the RSS.