If you have a Microcenter nearby, you can get a 2018 MBA 256/8GB model for $1,199. At $1,199, in my opinion, it is the best MacBook variant Apple sells. Lightweight, beautiful display, fast, dual Thunderbolt 3, has the latest features (3rd gen keyboard, Touch ID, T2 chip, 8th gen processor, etc.). The only flaw it has is a 300 nit screen. To me, it isn't really a flaw, I don't care that it doesn't get brighter because I never use my laptops at full brightness. I've yet to encounter any crashing issues, have had the 2018 MBA since the first week of December.
At its normal price however, the 2018 MBA is a bit of toss up. A refurbished 2017 nTB is still a great option. It has a brighter screen, an overall more powerful processor (due to a higher base clock and boost clock), and a better iGPU. To play Devil's Advocate, it does have inferior battery life (due to the higher clocked processor and brighter screen), has a 2nd gen keyboard, doesn't have TouchID, lacks the T2 chip, and IMO is less comfortable to type on (Air has a wedge design, its much more comfortable to type on).
Either or... I would suggest you save and pay more than go with the last gen MBA. The last gen MBA should have been upgraded/retired 3-4 years ago. It's in the same place the last gen Mac Mini was, no one should even consider buying it in 2018.