Logo Hampered Ontologies

I'm beat after another long session battering about the pros and cons of the big three Logo Hampered Ontologies.

Yes, 'Logo Hampered Ontologies'.

Ok, so it's an anagram for: 'Moodle, Google, Sharepoint'. But it's apt. And it's been consuming me.

The short of it: me and a few folks at school are thinking about which of the three will best serve the needs of teachers and students in a 21C setting.

Each have strong points. Each have weak points.

Moodle is 'made' for education. But it's definitely a work-in-progress and may have scalability issues. I also feel like it's sort of set up as a digital version of a 20th century classroom (i.e. it does tests and quizzes really well, but how well does it integrate with multimedia and social networking?)

Google Apps for Ed has all the parts for free -- and the sites are housed on the Cloud; but 'Sites' is pretty clunky (even compared to other free site-building services like Weebly and Wix) and there's quite a learning curve (especially with Wave).

Sharepoint is solid in its own way, but its dropboxes and calendars pale in comparison to Web 2.0 alternatives. And I'm just not convinced that its wiki or blog functions can touch dedicated sites like Wikispaces, Blogger, and WordPress. I've also had so much difficulty running 3rd party ware on MS browsers (and long since given up), that I just don't have much faith in the accessibility and flexibility of Sharepoint. But I may just be out-of-touch with what MS has been developing.

I'd really like to know what you all have to say about these Logo Hampered Ontologies.

What have you used? What do you use? What are the pros and cons and if you were the one making the call, which way would you go?

Looking forward to your responses; and please forward this on to folks who can extend the discussion; I really want to get an idea of what people's experiences are with these three monsters.