It looks like Ethereum mining could become great again with AMD's latest Vega 64 and 56 GPUs. Equipped with 16 GB of HMB2 VRAM, the Vega cards promise 100% faster hashing speeds, while maintaining reasonable prices.
https://www.notebookcheck.net/Early-reviews-claim-AMD-RX-Vega-GPUs-are-monster-Ethereum-miners.240110.0.html