I really don't think there is another brand out there that evokes this strong an endorsement from its customers (generalizing from me). It's a combination of the product, the customer service, and the man himself.
A couple random stories:
* David once called just to chat, which was really nice
* My wife and I once simultaneously ordered the same tie and he made me another tie after they had both been delivered (and we had realized our mistake
* My wife had forgotten...