I use Silo exclusively now, and left Shade in the Shade. I have not used Hexagon yet, but for the prices ~$180 for Hexagon and $109 for Silo, they are both excellent investments. Depending on your particular style of modeling, box modeling, patch, etc, you can adapt to programs to suit your needs. Silo does have a flexible and customizable workspace that you can re-arrange and set certain functions to your mouse buttons, and keyboard shortcuts. I have not tried Hexagon yet, so I cannot truly evaluate it; however, it does appear to be another powerful and ergonomic modeling tool to add to your arsenal. -The Starkdog