The best thing is that it has been around since 2004 so it's been here for the longest. I can not think that there are many things wrong with this product. It does what it is supposed to do fairly well. It was easy to set up and configure. I would say that the documentation could be improved. There isn't much in the way of user guides. That is something that most people will need help with when getting started with this product. I've been using it since 2008. It has been very reliable at all times. We use it internally for development environments as well as customer facing applications. We also use it to host different apps and our web server.