think there is another way we can look at this - and that is products that you do not like becasue they are hard to use. In that class I would have to be the sealants, for me. I have used about 3 now and my main go to; Ultima, needs to go on as if you're not really putting it on - in other words, THIN.If you put it on too thick so you can see where you put it, it leaves a smear. Not a big deal, but the holy grail of sealants for me would be one that acts like ultima's gloss but goes on with a but more lubricity, shows like an oil so you can see coverage, and then levels as it dries to a perfect shell. Tire dressings the same way, as said above, some are downright icky to put on....I also am still looking for a complete flat matte dressing for my dash which would KILL reflection of the dash on the windshield. PB Natural look is close, but not there yet...