Tablets are storage wimps. The priciest iPad--the $830 Wi-Fi + Cellular version--offers a measly 64 GB of flash memory. And the upcoming Microsoft Surface for Windows 8 Professional will come in 64-GB and 128-GB editions at prices to be announced later. By comparison, many ultrabooks have twice the storage capacity of the 128-GB Surface Pro. Both the $1,400 Acer Aspire S5 and the $1,800 Samsung Series 9 have 256-GB solid state drives (SSDs). And the low-end Dell Inspiron 14z ultrabook ($700) has both a 32-GB SSD and a 500-GB hard drive.