I needed a caching plugin for a rather heavy site. Was especially having problems with a plugin script slowing it all down, but needed the plugin. The site was loading in like 5 seconds or more on DSL.
Tried one highly recommended caching plugin and couldn't get it running. Another was voted as "broken" for the newest version of WP, so skipped that one entirely.
This one was well rated in a review so I tried it. It was easy to get going, just needed to add one line to the wp-config.php file and check a few boxes in the set up area. The site is loading in a blink now.
Thank you for a great plugin!