Right on!
I was able to get some good deals locally on some 1070s that I couldn't pass up (helps knowing how various manufacturers vary their warranty terms too (especially if buying used-look for receipts etc). Micron memory is decent and is what I found most common in 1070s up here in Canada.
If eletricity costs are a concern then definitely run some numbers to see if the higher efficiency is worth it.
Good luck (hope you wont need it except for in the pool you mine on

) and have fun!
That'll be the next hurtle is what pool to mine! I'm still struggling to find a good source on 1070 vs 1070ti efficiency to wattage.
Not sure if people are secretive or the information is tucked away.