How much faster would a 9Gbps card be in ETH and ZEC?

What are your opinions on the cards:
1060 6GB
Gigabyte: G1 Gaming
               Windforce OC 2
               Gaming Extreme
               Aorus 6G 9 Gbps
Msi:  Armor OC V1
        Gaming X
Asus: Dual



Difference from the cheapest to the most expensive is $ 360-405
I think the MSI gaming is the best for the money, because of its cooling, what kind of memory can i expect on it?
What do you think of the most expensive Aorus with 3 vents and 9Gpbs, it is $15 more expensive than the MSI gaming X
If its faster in mining, it would pay for itself,
i would like to see at least 23-24 ETH and 330-340 ZEC when OCed