in my TL days
I used to buy Purex on sale at K Mart when I had a toploader. Cleaned ok, but loads were not heavily soiled, and heavily soiled loads did not come out uniformly clean. When I moved to a FL, everything came out so much cleaner that I assumed it was the machine, rather than the detergent.
In preparation for arrival of the FL, I gave away all my standard Purex (several gallon sized bottles) to a neighbor with a TL, and bought some All Free & Clear HE (which may not really be an HE detergent, since it works in both types of machines, it had an "HE" on the label but not the oval "he" logo which appears to be a licensed TM). So the first loads washed with the FL were washed in All HE, not Purex.
I too learned to my surprise that Henkel now owns Purex. Not surprised at the CR ratings, though the last time I used Purex was early 2006 in the TL. Surprisingly that Henkel would sell such a mediocre product with its name on the label!! I never used the HE form of Purex, as it did not appear to exist when I bought the FL and I consistently use either Tide HE powder, or imported European detergent when either I or someone else comes home from Europe. Right now the collection includes Persil from Germany, Persil from UK, and two boxes of Via (Unilever's Swedish market Persil product).