This is pre office, pre photo shop and any other legacy/app store apps. I could see this going to 50gig real quick with a few programs and peripherals. Not to mention drivers and backup partitions. I have 50 gig of music alone. And I'm assuming here, but external storage indexing is a nightmare on RT. I assume the same will persist to Pro. And you can forget about the 64gig model. Who is going to spend $1000 on a laptop with less memory than their phone? I won't even consider a laptop with less than 500gb. Might as well get a Chrome book and save yourself $600.