Might want to save your money for September 17th when the 3080 releases. 10 GB GDDR6X and 2x faster than the 2080 for $700.  The 3070 is faster than 2080ti but usines 8 GB GDDR6 and comes out in October.

https://www.nvidia.com/en-us/geforce/news/introducing-rtx-30-series-graphics-cards/