We got our first Roku Box a few months back. I linked my Netflix and Hulu Plus accounts to the box in a matter of minutes. Set up was easy within 5 minutes and the free content is excellent! The box itself is tiny you dont even notice it next to the TV. We will most likely get rid of Comcast cable.
You are able to get a lot of other channels Amazon ondemand, Crackle which has a lot of older shows for free. There are on demand news from all the major news channels.
The box is about 25 feet away from my wireless router and signal is full. Im very happy with this purchase and will be ordering 1 more for the other TV in the house.