I've been looking for a caching plugin for the past month. Normally, I was not a fan of caching, but I realized I need to speed up a bit. I've tried the other caching plugin, but it was too complicated for me and it mess up the website's permalinks...somehow. Well, I'm no code junkie. Then, I tried WP super cache. I was surprise how easy it is to setup. No messing up with other settings that makes complication. Just what I needed and it's fast.