Cardano and Stellar are pretty good choice in my opinion. Especially, Cardano. I'm sure that this altcoin will definitely grow in 2018. Not so sure about Stellar, but still a promising coin though. Also although Ripple was dropping, I'd also invest in it anyway.
yeah i agree with you cardano and stellar is gonna do good.
But i still have a few ripple left but i will sell them when i have enough profit of it,
I dont want to invest in it anymore because its totally against where btc stands for.