Great Cycling Brands

I'm just going to add a somewhat obvious one, just to get it out of the way:

Brooks

The have been surpassed on many levels (they are heavy, bad at rain, crude etc.) but they are more popular than ever. Although they milk their heritage for all it's worth, they are still the default choice for thousands and thousands of cyclists. No foreign manufacturing either. Great products that they deserve to charge a premium for.

Currently they are also massively supportive of grassroots events and the like (tweed run, EHBPC, probably more I am unaware of).