Since Wii U allows for usb HDD's/SSD's/Flash Drives I think the complaints with regards to the Wii U's storage capacity are moot.
For $50 you get this:
http://www.bestbuy.com/site/seagate-expansion-1tb-external-usb-3-0-portable-hard-drive/7028043.p?id=1218822594532&skuId=7028043&ref=06&loc=01&ci_src=14110944&ci_sku=7028043&extensionType=pla:g&s_kwcid=PTC!pla!!!28048761399!g!!52793226679&kpid=7028043&k_clickid=ac0c1e34-9cf1-4b0e-a21d-d6fd978ade32&lsft=ref:212,loc:1&ksid=ac0c1e34-9cf1-4b0e-a21d-d6fd978ade32&ksprof_id=8&ksaffcode=pg104&ksdevice=c&kpid=7028043
^ 1TB and small as hell.







