In the year 2017 LTC and ETH rose very high. And the two coins are very promising. So that people predict that the coin is able to compete with BTC. But with the time that keeps going the price of BTC is also very remarkable pumping. And a very sharp decline in the year 2018 also in the natural all coins. LTC and ETH are excellent for long-term investments.
The advantages of ETH are many devs. from third parties who continue to develop so that makes ethereum great, and of course the long-term trend is ethereum so that I prefer ethereum rather than ETC.
both of these coins do have really good potential. but, I think people are indeed more inclined to ETH. besides because of the potential that is the same as bitcoin, I think, ETH use is easier than LTC. but maybe some people will choose LTC because the price is cheaper.