Pardon the late response, I know I got quotes for the PPG Shopline and the Omni lines and the Nason Single Stage Acrylic Enamel.
I haven't priced BASF and Martin Seynor yet either. I usually let the paint vendor "educate me" and then come on here for the second opinion.
I know this sounds like a tall order but what I'm looking for is the best pigment load/quality for the buck. My tractor will be used for work and show. Ideally I'd like to avoid ISOs as well.