Surface Pro 2 Storage Issues?

Now that the Haswell chip has been put into the new Surface Pro, I'm planning to grab a 256GB version myself.

My concern is that there have been previous issues about available space on the device (like how a 64GB Pro only had a fraction of usable space after the OS and recovery partitions were taken into account.)

For those with a 256GB Surface Pro 2, how much space was available to you after you counted all the extra fluff?