As far as am concern only bitcoin and Ethereum can give ROI, although Ethereum is just getting started like bitcoin, but Litecoin no no, because Litecoin can't give ROI as it stands now, litecoin is a coin  that is not even sure of getting to new all time high anytime soon the coin is still struggling with price which I don't see any future in that coin anymore. The only two coins I see future in  are bitcoin the father of all cryptocurrency and Ethereum the coin following bitcoin another coin aside this two coins is still struggling.