AT&T Uverse DVRs do not truly allow recording 4 shows at once. DVRs will not permit 4 HD recordings at one time - only 3. The fourth recording must be SD format. However, this is never defined in any advertising, print or otherwise. I have confirmed this and have a documented customer service conversation that stated there is no customer-facing documentation that lets the customer know this up front. Since there are a tremendous number of HD TVs and many customers view in HD, it can be inferred that they would record in HD. The conclusion is most people want to "record 4 shows at once" in HD, however this cannot be accomplished, meaning, the claim of "record 4 shows at once is not truly accurate. The advertising should be "record UP TO 4 shows at once" with documented clarification.