These cables are unbelievable low-priced. Is this all that is needed - or are there benefits to spending more?

Product ID: 4030
HDMI 1.3a CL2 Rated (In-Wall Installation) Cable (24AWG) w/ Net Jacket - 3ft (Gold Plated Connectors) - WHITE

Basic plasma tilting wallmount:
Product ID: 2852

Thank you for any comments on this vendor and your opinion on the merits of various cables. I'll likely get one longer HDMI cable too, to be safe.