I wash and wax quite a few family members vehicles of varying colors for them and occasionally work on getting out some swirls. Most of the vehicles I do are outside 24/7 and the owners have the mentality that all waxes last for 6 months.
I've concluded form reading on autopia the Meguiars #20 would be better on on lighter cars where #21 would be better for darker colors. I've read great things about 21's durability but not much about 20. How does 20 compare against 21 in this catagory. Also how to both 20 and 21 compare in durability to Collinite 845. I'm much more concerned about durability and ease of use than about shine since these cars only see new wax about every 5 or 6 months.
I've concluded form reading on autopia the Meguiars #20 would be better on on lighter cars where #21 would be better for darker colors. I've read great things about 21's durability but not much about 20. How does 20 compare against 21 in this catagory. Also how to both 20 and 21 compare in durability to Collinite 845. I'm much more concerned about durability and ease of use than about shine since these cars only see new wax about every 5 or 6 months.