Hello! I'm looking for a secondary laptop for coffeeshop and flights (I'm traveling a lot). I currently have a 15-inch MBP which is great but too big to carry around and use it in economy seats. I'm mostly going to use it for writing and coding. I definitely prefer the size and 256gb of the 12", but the macbook air sounds more up-to-date. Is the MBA that big compare to the MB ?