im painting a car for someone and i have always used sherwin williams products had great results have recently used spi epoxy i love it. and im wanting to use universal clear from now on. ive had great cars with the ultra 7000 base with sherwin clear and barry says it compatable. i have also used atx base is it compatable? i am just wanting some of you experiences with this and opinions on this. i know sherwin williams bought out valspar which i think owns prospray. so is it all the same now? if not what o ypu reccomend?