I bought a large box of (the so-called "original") Tide almost a year ago at Sams. It wasn't a particular "bargain", but I thought I would use it along with some of the Mexican detergents and see how it compares when washing really dirty stuff, especially gardening clothes.
The first thing I noticed is that it left a bit of a white powder residue on the sides of the solid-tub machines leading me to believe they must be using "fillers" of some type.
That pissed me off as they should not be doing that with such a high price-point. I called the P&G Customer Dis-service line and raged on them, but I know they don't give a s%#t.
So I'll stick with my large stash of phosphated FOCA. I also have a good stock of phosphated VIVA and IMO VIVA is MUCH more powerful than Tide. Even when I run out of the phosphated stuff, I will just get some STTP and continue to use the Mexican stuff. I just prefer it to most of the American brands. Seems like the American brands are made to remove office dust. Many of the Mexican people in the U.S. do very hard jobs and get their clothes very dirty. Paving roads, tarring roofs, and working on farms, construction jobs etc. I belive their detergents take that into account and that is why they are so strong.
I used to like FAB, but when C-P spun them off the new owners changed the formulae and it isn't the same. Doesn't like to dissolve very well. I use the Sears stuff in the front loaders, 1-18, and the "Collapse-O" since they need a low-sudzer.
Soooo, at this point my favorite American brand is still GAIN.( Which I like to pronounce "Gay-in").