they're a good unit. sometimes the screen is a little small, depending on what you're working on. then again, my previous laptop had a 17 inch screen, so it was quite the adjustment.
i've convinced myself that the unit's small ssd is a good thing as it forces me to keep data off of it. if there's a laptop that has a high risk of sprouting legs, it's a macbook air, they hold their value very well and are always in demand.
just don't bother with a usb-based external hard drive setup, try to get something networked.
you can expand the storage a little bit with an sd card.
