When members ask for advice and you respond this way, you are doing them a great disservice. Why would you do this?
You give a much higher price [$379 vs $300]that might not even be true at release.
You are estimating the performance of your recommended card.
Every single so called ADF member has recommended nvidia cards in the past if they see a benefit to it for the user. This blind recommendation, by you, of the Nvidia 1070 shows that you only care about promoting Nvidia at everyone else's expense. Members request advice and get an answer not in their best interest.
If you don't know the performance of the soon to be released cards, then tell them wait and see which will be the best for their money. That answer, is in the member's interest and is the only honest answer.
To the OP, Michael, please wait a few weeks, if possible, to see what is available. You will have a choice of several new generation cards of varying prices and performance levels. Perf/$ will be better than present choices.