The performance gains of this plugin are incredible! It's not perfect but if you need more caching/performance it has everything you could ever need/want. Honestly, I think that sometimes when updating or editing pages/posts I have had to wait a little while between changes being reflected in the front page of my site. But if there are changes pending, in the backend they do appear pretty quick after I refresh. It really is so worth it though! Also, I can't say enough good things about the support. As soon as I hit any issues (and we're talking thousands and thousands of posts here) someone usually responds within minutes. The team at WooThemes has got customer service down to an art form with these guys! We were looking for a caching solution for our posts, but also some way to speed up page loads and the WP Caching Pro plugin did both. It's super fast (we've tested it against Memcached). The documentation could be better - we're still learning how best use this product! We didn't have memcache previously so I was able test out its speed over redigo which has been used before by us but not as an actual caching solution within our stack of technologies at that point yet since we were just testing things internally anyway.