Need help with LMS decision....is Moodle that great?

Thank you all for sharing your insights and experiences. I especially appreciate hearing about what systems you have used that you have both loved working with and those who have been subpar.  There are sooo many options.   It has been really helpful as I have not had any luck in getting Moodle downloaded onto my MAC computer.  But everything I read is how many users Moodle has and how popular it is.  Based on what I am hearing, because I don't have IT background or support is leading to my confusion with how Moodle should work. 

To provide additional information about what my needs are for this project.  I am working closely with a large social media group who is looking to provide online courses in the related field both for free use as well as for purchase.  In addition we are looking to partner with a site that would also allow our group members to upload their own content for free use or purchase.  We don't currently have IT support, but if necesssary could explore that as an option.  This has the potential to have a very large amount of users taking courses as well as uploading. 

So the basic needs are these:

Commerce capbilities

User friendly both from administration, as well as end users

Customization

Community building options such as chat boards

Easy integration with multiple eLearning authoring software and

Preferably web based as users will from all over the world

If possible a structure that wouldn't require major IT support

I hope that gives a little bit better picture of what I am exploring.  I recognize my needs are a little different than those of a singular company or academic setting. 

Thanks again for all your great suggestions!