I think in the end it’s whatever products you work with best. As with most things, its not the products as much as the person. To your point, the window cleaner isn't magic, but their lint free towels are pretty good. Another example as you pointed out was the car wash - its fine, but nothing spectacular, but then again its car wash. I'll have to check out some of the alternatives you mentioned - isn't clean clean if you go through a decent detailing process (rinse, wash, rinse, clay, polish, wax)? BTW - what do you do with the catalog if the products don't suit you?