Here's a chart that shows cost vs hashrate for different 3GB cards.
https://www.pyramidreviews.com/cryptocorner/mining-gpu-speed-and-price-comparison/ethereum-mining-speed-gpu-comparison-for-gtx1060-3gb/

Those 3 cards should mine about the same speed, but the Inno3d and Palit are usually way more expensive than the Zotac so they aren't as profitable to buy.

If you are buying cards these days, chances are they will come with Hynix memory, so mining Ethash won't be as profitable as mining Equihash.