Haven't you heard the news? Don't get one. There is at least one class action suit going in because of game systems shutting down.
They have a flawed design that results in the unit overheating and shutting down. There is no fix and the design for the second wave of units will have to change. I've talked to people who worked on the project and the yield through the factory is terrible, part of the reason there are so few available.
Just wait until the week of the 26th and the amount of people complaining having opened the ones they wrapped for Christmas.