I did not see it mentioned in the article (doesn't mean it wasn't there, so if I'm repeating something already stated above, I plead the interwebz forgiveness), but there are plenty of other coins that can be mined that do not have the large DAG file of Ethereum at this time. Coins like UBIQ and Expanse are both Ethereum based, so the hashing performance should translate directly, and while their value is much less, the difficulty difference means you are mining many more of them than you would Ethereum. Personally, I'd weigh the 3GB issue against when Ethereum is going Proof of Stake, understanding that even 8GB cards aren't going to be able to mine once that hits sometime in the next few months, so making any hardware choices based on Ethereum alone is probably a bad move. I'd plan your purchases expecting to mine something else once Ethereum goes POS, and calculate that into your ROI calculations. The 1060's and 1070's are pretty versatile as well for mining different types of algorithms, so that's another check in their column.
And AGENTLOZEN, the mining craze is starting to fall with crypto prices, meaning that there will probably be a few thousand cards on the market at cheap prices in the next few months. All of the "get rich quick" people are abandoning the market. I'd keep an eye on ebay (and the cards are most likely fine, they're undervolted and cooled efficiently to maximize profit/electricity usage, so while they've been running 24/7, they're all "highway miles".