Hello sir..i want to know which sealant is better for my black corolla
Autofinesse tough coat sealant or megs m21..
And also wax comparison between megs#26 and its ultimate wax...
I'm sure others will chime in with some help on the specific products you listed I just wanted to point out that how long any wax or sealant lasts all comes down to how the paint is "touched" after application.
Run your car through a brush style automatic car wash and nothing is going to last very long.
Wash a car very carefully using good technique and a tool like the Foam Gun, like I use), and you increase how long anything will last.
It always comes down to how the paint is touched. That can seem kind of simplistic but it's accurate and true.