Ethereum, Waves and ARDR are my favorite cons for 2018. I expect some big moves in the future
etherium is my all time favourite and i think it will provide good in the end. along with ETH. i am looking forward to ripple and "IOTA" as well i am investing all my earning into these 3 and hoping for their great return in the near future. my first strategy is to invest in "iota" and ripple as much as i can and than i comes to ethereum because the chances to gain more profit is in those two.
In my opinion ethereum is the best altcoin to invest on 2018, because this altcoin value seems of increasing trends in the market. Moreover due to high numbers of ethereum supporters I think its good to invest on this coin, because I believe that in the future their value was continue increasing.