If you read any of the postings on Saville Row brushes - you by default know QED, as they are the only place to get them. I bought a natural horn brush and it is amazing.
I will say that the owner, Charles, is a class act and the products he carries (bath soaps, shave products, etc) are all top notch. I am going to pick up a Saville Row soon, just as soon as I can decide between the 3824 and the 3722. I want a "3724", but alas - that doesn't exist.