Thank-you everyone for your feedback. At the end of the day I listened to my budget and went with SP4 i5/8/256 and a teal cover. Loving it and drawing on it's big ass screen. Hi! I'm picking up my Surface Book Friday, looking at the base.... question is, will I be able to use an SDXC card to expand the storage later on? I would use it to store all of my Onedrive sync files and leave the internal drive for applications and OS to keep it running fast. Would it be better to go for the 256gb? Better is a subjective statement but your opinions would help me in my deliberations. I appreciate any feedback you may have.