Learning to paint....

Always go to the tech sheet as every co.'s material, they are all different as far as everything!!!!
Lot of people on this site love Southern Polyurethanes, I do also. They have a tech guy that is great help for as their products and people like me that 's not a pro!!
I've had pro's tell me, the important part no doubt, is using the best topcoat you an afford and then just GOOD primers and fillers, they do not have to be the most expensive. I think the better fillers are worth the extra $ as it am crap at that part!!!! ha