I'm currently using Persil because I read rave reviews for its cleaning ability; mainly Persil Pro Clean 2 n 1.
I have used all the formulas and the above is superior cleaning.
Persil Free & Clear is also excellent in cleaning, IMO.
The only thing I don't like about Persil is that I have to use 2 rinse cycles to get all the soap out. We have a water softener and don't know if that's the problem. I only use about 1 tablespoon of detergent and there are suds everywhere.
Other brands I don't have this problem. I'm going to stop using Persil only because of this. Persil is fantastic in getting clothing clean.