I’m interested in this thread, I’ve never seen charts that list this but I’lll bet there are a lot of opinions. A products durability is such a “Your Mileage May Vary” type thing. That said, I’m the last person in the world to give valuable input on how long a product might last. I do have opinions on some products that just don’t seem to have it. Oddly, almost every time I make a comment along these lines someone tells me it’s either about my prep work or lack thereof or how I’ve applied the product incorrectly. Those type of comments just annoy me, I believe that I can prep a car with some of the best (it may take me longer) and I can read and follow a product’s instructions as well as anyone.
I honestly never wait to see how long a product might last. I still get that sense of satisfacton of completing a full detail. I find myself putting something on at least monthly and sometimes more frequently. I’ll be interested in seeing others comments in this thread.

h34r: