We use Salesforce Professional Edition 14. I was not here for implementation so I can't speak to that. What I will say is that Salesforce is an excellent database but I find it very cumbersome to use. It is not intuitive nor does it lend itself to functioning as a true AMS system. We have had integration issues with the multiple solutions we 'hang' off it to make it function as we need and many of the APIs we use are not supported by the Salesforce or the vendor you are trying to integrate with. If you are looking for purely a database solution it is wonderful.