A winter special of the consumer technology show.
Apple's latest version of its market-leading smartphone, the iPhone 4S, hit the shops in autumn. But are customers buying a convenient bundle or a quality package? With a comparable budget, Suzi Perry sets out to buy as many gadgets as possible, and test them against the iPhone's capabilities.
Meanwhile, Polly is in the USA checking out the frontline of military tech - an amphibious tank.