Mambo or Joomla

Dear list members:

I have been working for some time now with Mambo Open Source (MOS), a CMS that 
I found a good combination of features and ease of administration. As you 
well know, some months ago there was an split of several MOS programmers to 
Joomla. Currently the two applications are almost identical, but in the 
future probably they will take different ways. According with your experience 
and information with which of them you suggest to go: MOS or Joomla? Which 
one offers a more long term development? Sorry to put a question over 
specific CMS solutions, but I'll like to take the best informed alternative.

Thanks and the best for the new year for you all.

Rob.