Years ago I bought some POR-GLO from the same company as POR15. No idea what's in it, but it leaves the perfect semi gloss shine that dries fully and does not attract dust. It smells like mineral spirits when you apply and looks way too glossy, but when that flashes off it looks perfect. I only have to put it on every few years.

Not sure if you can buy any longer.

Edit: I did find on one site. http://www.allcarparts.us/catalogb.php?A=1&B=1&S=11&C=9
Almost tempted to buy a spare can. Goes a long way.