The original intent of this chart was going to be largely one of comparing materials. What I have found is that most of the manufacturers are unwilling to share much detail in terms of type/quality of materials, exactly what goes where, etc. I don't imagine this is going to change any time soon, so here is the chart in it's most current form.
If your pet brand of silencer isn't included please feel free to email me and I'll do my best to get the information and include whatever I can in the chart.