Commenting Systems

Dear Followers and Fellow Bloggers,


I was wondering if any of you could help me out with some questions. I want to change the commenting system from the blogger one, to another. I reply to comments most of the time here, and none of you see them, usually. And I've been seeing the different commenting systems of Intense Debate and DISQUS around.


I was wondering if any of you use or used them, and your view on using them? If you use a different system could you maybe leave a link for me to check it out? 


I'll appreciate any help you can give.


Thanks! :)
~Andrea