i use PPG's DBC base coat with thier concept 2021 clear and have great luck. very easy to work with, good tape times and is very durable. if you are doing a large amount of graphics the high solids base coat/ clear coat systems are the only way to go. most paint manufacturers (PPG, dupont, BASF, etc.) offer very high end products and it comes down to which ever one you feel most comfortable working with. not sure there really is a "best" one these days. good luck
i did this one in concept base/clear. did all the graphics on both sides in one day and did the deck the next day than buffed the whole thing out the day after that.