Since I at long last chosen to ppf the full outside of my Model 3 (Dark Blue Metallic), I've been genuinely thinking about the matte/silk finish of XPEL Secrecy or STEK Dynomatt. Would anybody want to remark on the upkeep of any of these ? I've had the reasonable/polished ppf applied to my last 9 vehicles and those were not difficult to keep up with. Much obliged ahead of time.