I love the fact that it is easy to set up and that it works well. Some of the features are a little too specific to certain products (such as caching, which in my case doesn't apply). I also dislike the fact that there are so many different ways to configure it. I would recommend looking at the features that would apply to your business and only use those. I am solving the problems that were created by a poor user experience. Before WAN Optimization, users were experiencing high ping times, and slow speeds. This was caused by a lack of compression and caching, both of which WAN Optimization solves.