Well people who have tried it, rave over the Mexican version of Ariel, which contains phosphates. The "American" version does not contain phosphates. Only problem is that like most Mexican detergents with phosphates, Ariel makes lots of suds, but depending upon your local water quality it may not be a problem. Most people have only found/tried the Ariel for top loading washing machines, or if one was living in Mexico, wash tub/bricks down by the lake use. There is a version made for front loaders, but is very hard to find.
FWIW, Tree Huggers have gotten wind of phosphate Ariel being sold in local stores and at once started proceedings, legal and otherwise to get the product off the shelves. Still Mexican Grocer.com sells Mexican Ariel, as do many stores in areas with large Hispanic populations, even better if they are close to the southern border.
Personally cannot STAND the scent of Ariel, and make no mistake, the stuff is very laden with scent. So much so people bringing back large amounts in their car have had to stop and open the windows for air!
To date not one chemical has been invented which and do in laundry what phosphates do. Not washing soda, Zeolites,sodium citrates, or any combination of them. If you really want "whiter than white" whites, get yourself some STPP. You'll notice the difference usually in the first wash load.
Launderess