At SourceOne Internet we use Joomla as our "choice" for our cms or Content Management system.  Using Joomla lets us creat a site for our clients extremly fast while using the latest responsibve and seo techniques.  Joomla also gives our users the ability to change and edit things easily and cost effectiley.  How many times have you had to over pay a web designer to change a few simple things on your web site?  With SourceOne and Joomla you can easily make those changes on on your own, and yet have the expertise of S1 on your side when needed.