I distributed for
Chemspec and
Prochem for Years we used off brands before that Brother's Janitorial, Maintex.
The big manufactuerers had more consistency in their product then a smaller local supplier.
The color and consistency would always change Biochem. Recieved lots of samples from all over and It seamed like forever You would hear it works like 90 or Slurry.
I think price is a huge factor.
I love Cti products for a variety of problems, The new Dinge away for t.l. gray
Cti recommends Peroxide to help brighten traffic lane gray if You dont have dinge away.
I love brighteners because I do a lot of Urine jobs and stains.
PS Energizer will help prevent browning. You may not need it on every job but its a great tool.
Most products have some sort of opticle brightner