Hi Mike,
You are lucky the FEGA convention is comming to Reno at the end of this month.
I am sure you will see and be able to try the airgraver at the show. There should be many great engravers that are on this site.
Here is the link. Since you live there it is a must go.
http://www.fega.com/about/Convention.htm
If you go you must compare the Airgraver to the other tools, You will see and feel the difference.
AirAmp