When I did powerful gaming laptops the last few years, I only went with
http://www.xoticpc.com/I also, only used the sager models because they are the best company reliability wise, heat wise, and cost.
They have plenty of models with the 1070, you'll just have to read up on them to see which one is suitable for you.
I don't think any laptop is going to cost under 2k with a 1080.