I am vacillating again.
Have had this Air since 2011. Heavy, daily use for seven years. Battery has just now dropped below 50% efficiency. It can no longer run the new macOS releases It has several dents and the keycaps, in places, are worn away.
Yet it still works reliably.
Hate the direction Apple seems to be going in but I have never had a laptop be this reliable.
Giving serious thought to the 2018 Retina Air.