Mmmh, i like the way hexagon working because i was an Amapi user for long time. But Silo seems to be more stable and have some technologies that Hexagon don't have (topology brush is one of them, really useful). To be honest i don't like both, the better choice on the market today is modo for sure, but it have another price. It depend much on what kind of user you are, if you are a pro, buy modo without doubts, if not hexagon or silo are both good modelers. HTH -TOXE