It was Ethereum and Ripple for the year 2017 and 2018/2019 had been bearish without any particular altcoins to be preferred we have seen almost all the altcoins going through bloodbath except few exchange tokens like BNB but which will be the most profitable altcoins for 2020? Will it Ethereum again or some other altcoins like litecoin or BCH or Ripple?
Eth will be the best choice for many on here and even new developers too, its same for me and i am looking forward to the next 2.0 upgrade with the staking ability, i bet it will be good, there are other good coins and tokens as well but you got to do researches yourself to find answers
Eth in my opinion is a good investment. Eth seems to be the best choice right now because it is still cheap, the problem either later or in the future Ethereum is about the cost of gas. Too many deals and gas prices are getting very, very high.