Both ethereum and litecoin are good to invest but I will still prefer litecoin at the moment. Litecoin has made some significant gained more than ethereum since the beginning of this year and that means there are good reason why people are investing currently.
I too would recommend people to invest in Litecoins, as we all have witnessed an impressive rally in Litecoins since the start of the year. The team behind Litecoins is already working on it to make it more fungible, which means itll only improve going ahead. Another reason I would cite for investing in Litecoins is the growing adoption rate, which I feel is increasing steadily hence I would recommend it over Ethereum.