If your decision is between ripple or litecoin, I might want to recommend that you hold ripple. It is risky, it is centralized, but it is very liquid and ripple is one of the cryptocurrency trader's favourite!
I agree that buying Ripple is more promising than Litecoin, Ripple is always full of surprises, and the last time is that some time goes up more than 85% when the market is dropping, I'm sure that the end of the year Ripple prices can reach $ 1.