Post rating Plugins

I’ve been searching through plugins and have been unable to find something I’m looking for. Currently using GD Star Rating and its OK but I’m looking for a plugin that has thumbs up and thumbs down, but displays information that X amount of people found this post helpful. I am not sure if this is a comments only feature, but I’m looking for something along the lines of the Amazon.com rating system that is in place but instead of being for products, I would like it for our posts.

The star rating was not working for us as nobody was using it. I’m hoping that a simple thumbs up & thumbs down option while displaying the correct data from these votes will achieve more input from visitor and the information displayed will provoke more people to click and read the posts/pages.

Thanks in advance!