Years ago a Case salesman who was regularly the regional sales leader told me, "you sell your weakest feature as a feature."  You also agree with the customer when he believes something is really good.

I have some examples that he gave but it'd just probably start an argument so I'll skip that.

I notice an ad running now for one brand of toilet paper that brags about not having the cardboard center.  That "feature" should make the roll flop all over and probably make it difficult to unroll in a decent manner.  

It's hey, look we took something out and now it's more expensive and works poorer but we're saving the environment.