There are a lot of factors involved that you haven't mentioned, like options. Some Lexus options are very expensive. Remember, the 2014 will be worth less when you trade it in because it will be a year older and be higher mileage. I personally, considering similarly equipped, would take the 2015. Seeing that you live in WA, the AWD might be important to you....in the south I wouldn't need or care for it. I would make them come off the price more.
Keep us posted and try to include pics. Either way you go, you will love the car.