I've used Maxima for years, sorta messy but dealt with it.
Since getting the new Z and seeing some of the Youtube "tests", decided on trying Dupont's spray for awhile- couldn't find it locally so ordered 2 cans off Ebay.
My ZRX chain was so nasty, cleaned it for a good 45 minutes with grunge brush + kerosene then air hose, being gold it shines again! That spray goes on thin, I hit it again few hours later, can't even tell it's on there.
See how it does.