Hello Woodser,
Yes, I'm sure, I have 10 GTX 1060 3gb and they are working fine and will be working fine for at least one year with ETH and once POS will be there, no GPU will be able to mine so I'll switch to another currency. Those cards work well on ZEC too. 6Gb deliver a little bit more performance but they are much more expensive. The most important criteria is Samsung memory.
Thanks
Laurent