Like Apple, B&H Photo has made exceptions for me(Nor am I speaking for anyone else) in the past concerning Hardware defects against their 30 day policy to make the situation right. The reason I say this, is that I can't guarantee the same results for everybody, but that speaks milestones about a company that will rectify issues with something that is out of the users control to make the situation whole. Sales tax or not, I still recommend B&H Photo regardless.
Yes, B&H will make exceptions for defective merchandise and perhaps for other things. And I personally have purchased many items including Apple Care from them. However, folks need to know what their official return policy is. And I have run into folks who were unable to return items to B&H because of that policy.