That's right, I forgot about the storage slot.  I thought there was some restrictions on how it's used for storage (i.e. it can't hold apps), but I've yet to use it.

@Dr Herbie:I just checked my monthly download for November and I came in just over 40GB, with very little in the way of streaming.  I do some offsite backup and watch a few TV shows, but nowhere near the amount that would occur with children in the equation.

Is this a limitation of Dr. Herbie's neighborhood or a UK norm?