At the moment I have the Surface 3 (128 GB, 4 GB ram) which I bought from the good ole Costco. Right now they have a sale for the Surface Pro 3 (128 GB, 4 GB ram, intel core i5). I can still return my surface 3 and assuming the extra 300 bucks is not a problem should I upgrade? How much better will it be? Any cons? Edit: I really enjoy my surface 3.