A go-to brand? Perhaps on a product-by-product basis. E.g., I'll almost always default to Continental for tires...except when I don't. And if I was the victim of some bizarre hypothetical ultimatum where all my kit had to be from a single manufacturer I'd probably choose Pearl Izumi without too much hesitation. Or maybe Assos. And my saddles are all fizik, and if they still made the model I like that'd be my go-to saddle in perpetuity, but they don't so the next time I need a new saddle I might have to get something other than a fizik.

So actually I guess the answer is no, I don't have a go-to product brand.