UPDATE (sorry for reply to my own post it wouldnt let me edit the previous post)
i actually took the liberty to research drupal, having read several drupal vs joomla articles and watched a drupal produced promo video i still dont see anything that would make me move over.
i guess it depends on your experience and knowledge of joomla and your own development/coding skills as to what is best for you...
albeit some items that arent out of the box available for joomla but functionality is available for using third party apps and for the most part are available for free and are extremely simple to install taking just minutes to implement
i will say though it took me two to three attempts to get into joomla... basically like with everything else i refused to read up and how to customize joomla and tried to hack it into working the way i wanted too... that didnt work, i had to read up and understand how it functioned... from there a ripped the thing to pieces it did take me a couple of months to really get into it, but now and certainly with the release of the MVC framework of Joomla 1.5 and well over 200+ sites under my belt, am familiar with joomla as probably you are with drupal
i am sure each cms has pros and cons - so at the end of the day each to their own
just dont be put off joomla if you cant figure it out after 5 minutes of tinkering with it... if you need help/advice about joomla i am more than willing to help where i can, lets put it like this, running my own web development and seo business i have to put a lot of the success of it down to joomla, without the proven results i get from it in the search engines and the ease of which we can put sites together i wouldnt be living as comfortably as i do right now if it wasnt for joomla...
its not just doing a site in joomla is knowing how to get it work for you and how to build it properly... especially when it comes to getting ranked in the search engines...