The 1070 is the sweet spot. More powerful than a 1060 but cheaper than a 1080. And although the 980 Ti can do what the 1070 can do, the 1070 does it using much less power.
Another option, if you have patience, is to wait for AMD's Vega and see how Nvidia reacts (1080 Ti, etc...). As a result prices will surely drop on existing stock but if money is no object the product assortment increases.
Should you choose to go with a 1070 or 1080 and you're evaluating AIB's, the ROG Strix would definitely be the card to choose. Sleek yet aggressive features with a subdued vulgarity. The RGB LED's provide an alternate ambiance and the card's lighting can be tuned to reflect your hardware assembly. Performance is consistent across all AIB offerings, always marginally higher than Founders Edition cards but you can do your own research in that regard, as well as quality.
I'd like to deploy my troops in her country.