PTJD it is obviously up to you. But Al-53 hooked me up with a sealant and collinite in the fall. I am very pleased!!!! IMO you are lucky if you car looks good for 2 days in the winter... so I leaned more towards durability! That is JMO
If you have the collinite already why spend the money,
when you car is doing to be dirty and covered with salt in a few days anyway.