Best value for money is debeers or protec. better quality would be dupont,spies hecker,standox,sikkens or glasurit. Steer clear of spartan, concept and motospray as they have a few quality problems. As far as PPG goes its overpriced. Ive been a painter for 12 years 7 of which i used PPG and i was never impressed by it. Its similar in price to standox and spies hecker but the quality was par with debeers