Here where I live we have every store on that list except for Leroy Merlin, Chamberlains, and Brights. A lot of these franchise stores switch from one to the other. From my experience, when I go to Builders, I often find that they charge more for the same product than the others. Though for convenience, I would go to them, just for selection.
Back when I still needed material for business, it was either Cashbuild or Build It.