I just finished upgrading a Joomla 1.5 site to Joomla 2.5. The upgrade included migrating Mosets Tree. After spending countless hours trying to upgrade a Joomla 1.5 / Sobi2 site to Joomla 2.5 / SobiPro, I was releaved that the migration process for Mosets Tree was well documented and straightforward.
There are two main Business Directory components for Joomla 2.5: Mosets Tree and SobiPro. If you are looking for a business directory component, I highly recommend Mosets Tree. On the other hand, I can find nothing about Sobi to recommend it.
Sobi = No Upgrade Path
First, I’d stay away from Sobi. The developers left Sobi2 users without an upgrade path to SobiPro. If you have Sobo2 and want to upgrade to SobiPro and Joomla 2.5, you will have to scour the internet to find a way to do it. And the process is very complex and I would not recommend it unless you are a Joomla and website expert. And Sobi documentation is pitiful.
Mosets Tree, on the other hand, provides the ability to migrate from Mosets 2.0 to 3.0; the migration process is well documented and works. What’s more, Mosets Tree also provides a tool for migrating Sobo2 into Mosets Tree. Amazing! Mosets can provide an import tool for Sobi2 but SobiPro can’t.