System software always gobbles more than its fair share of storage, but nowhere is its gluttony more acute than on the Surface RT and Surface Pro. According to Microsoft, the 32-GB Surface RT has about 15 GB of available space for user content; the 64-GB Surface Pro has 30 GB of free space. In other words, more than half of the devices' advertised storage capacity is unavailable before you open the box.
This shortcoming seems more troublesome for users of the 64-GB Surface Pro ($899), which is really a full-fledged Windows laptop with a detachable keyboard, touchscreen and stylus. Think about it: A $1,000 PC (including keyboard) with a measly 30 gigs of usable storage? Microsoft may want to boost that figure, or drop the 64-GB model and make the 128-GB unit (89 GB of available space) the low-end Surface Pro.