I used Cascade for the dishwasher, and Dawn for the "hand dishes" religiously for years. Then Dawn switched to that awful new bottle that I can't hang on to when my hands are wet, so I switched to the local generic store brand. Then when Cascade started adding that "with Dawn added" feature (I use the liquid detergent), I noticed the gel-like consistancey turned to water consistancy after opening it, and didn't clean very well, so I switched to the local generic brand for that too.
I noticed the dishes weren't as clear and clean as I'd remembered, and wondered if it was because of the cheap brand. Now I figure I'm in the same boat as everyone else, that it's just the formula. Glad to know, switching to yet another brand is bothersome too, cause I don't really want to experiment with so many brands.