This is I guess the best cache plugin out. No argument on this. I have used several cache plugins so far but this stands out just unlike any other cache plugin. This is the neat, the most effective, lightweight and less cluttered. yet, it performs better than any other plugin who devoted much time in some features or functions that most of the website may not even need. This plugin just does what it's built for - speeding up the website. Google Page Speed score will surely confirm this.
And not to mention the superb support from the author. Check out the support forum and all can say that the author is very active, eager to resolve things. Kudos man. I really appreciate and highly recommend this plugin to every WP users. :P