To me the gradually growing Altcoin is NEO,its called Chinese Ethereum because its also based on updated and modified ETH smart contract technology.I also studied about its development team,very competent and experienced in block chain technology.I think if Ban news in China stop,then this Chinese product NEO can bring revolution in coming years,it may overtake ETH in upcoming few years.This is my extensive research about NEO.Share your ideas.
To me, my most favorite altcoin that is really good to invest with is the ripple XRP especially because of the fact that it usecase is being acknowledge by several banks all over the globe.