It's not a high-traffic forum, but it might be best to post this here:
http://www.codeproject.com/Forums/1588128/Cloud-Computing.aspx[
^] - the forum layout is better for discussion type messages than QA, which is intended for "question - answer" type detail. And any "best" comparison is going to be a discussion! :laugh:
Plus, QA is a moving feast - this question will disappear into the depths very quickly and never be seen by the majority of readers. The forums move more slowly, so your question would still be visible next week when most people are back at work and looking at the site again.