Zues,
I have ordered squeegee rubbers in large amounts before and to my dissapointment some of them were damaged. They had little nicks and left a few marks. Couldn't use them. Only a few from 144 at a time.
It is difficult to tell at the time if a rubber is perfect. I laugh when my workers and I tell each other" Hey, do you need any new rubbers?"
Right now I have two women and two men that do windows only. It is funny sometimes to talk about rubbers.
Anyway, most rubbers are perfect, but I don't think it is any particular brand.
Have fun and be careful out there!