Gift Guide: Choosing a streaming device without overpaying

Why watch video on a phone or a tablet when you can get a device for as little as $30 to stream shows on a big-screen TV? Apple, Google, Amazon, Roku and dozens of others are all competing to be your gateway to online video. Which device you need will largely depend on what services you watch and what kind of TV you have. The days when watching TV was a choice between a handful of channels are long gone. Now, there are a dizzying array of streaming devices on the market, with all of the big manufacturers battling for control of the living room - so how do you choose what to buy? Of course, the device alone won't be enough.