I'm planing to buy a WiiU and I wondering to buy some games (like Super Mario U) by eshop. Can I go with 8GB WiiU and then "install" this (and more future games for sure) in my external HD? this would decrease the performance? Have any of you guys bought and save on external HD? By the way, is it USB2 the connection to external HD? ps: if this thing about save to external HD would be true, why should I buy deluxe version?