The best thing about HaXm is that it allows you to test out new security solutions without actually having to deploy them to production. It's also user friendly and easy to use. I have not found anything that I dislike. The price of HaXm compared with other simulators is quite high but the features are worth spending that money for. You can easily create realistic scenarios that you can't just do in the real world. It's very easy to learn how to use. If you want to test out different ideas without deploying them to production then HaXm is the way to go. We are testing out ways to prevent our customers from being hacked when they access our website at work.