Structure(s) vs. Categories for product catalog So I am working on a project that includes an online product catalog. Is there a recommended way of setting up a catalog regarding the use of structure(s) vs. categories or a combination both? 

I will have 


brands with a couple of product families and a few products in every
family
accessories by the same brand for the whole family 
accessories by the same brand for various product families
accessories by the same brand for only certain products
accessories by other brands for a whole product family 
accessories by other brands for a certain product only


Wondering if one structure or two (for brands and products) and relations would work and be efficient and flexible, or if I should work with categories as well? In total, it will be about 100 to 150 items in the catalog.

Thanks for opinions!
I find it difficult sometimes to choose between a category group and a structure, so for me it mostly boils down to semantics.

A brand can be both a structure entry and a category. If you're going to have pages with information about the brand/product faily/product, and they will be available in some kind of menu to be browsed by itself, I think I'd go with a structure. If, on the other hand, they are only going to be used for filtering and organizing, a category group feels more appropriate to me.

From what you've described, I think I'd go with:


Products (structure)
Accessories (structure)
Brands (category)
Product family (category)


But as I said, it depends a lot on the specifics of your content.