In my conversations with Donn, I've expressed an interest in moving away from strong (toxic) paints because I am sure, like the rest of you here, I want to be more careful with fumes and exposure to some of these toxic compounds.
I'd be interested to hear from people who really know about the chemical compounds, etc., what some differences might be between urethanes versus enamels.
Most of us who work with these paint systems already know to work with lots of protection, the best mask and filters, long sleeves, paints, latex gloves, etc., everything to help you stay safe when working with this stuff.