i would go for both!
They are two different technologies,
litecoin is a coin, ethereum is not so both will perform but in their own ways.
Two really solid technologies/coins and both are showing healthy growth atm.
its hard to see them dropping but instead the opposite.
Very nice comment, indeed Ethereum and LiteCoin are two different things,
and in long run I believe both of them will have success.
I had that choice a week ago and I chose Ethereum, I bought 1 ETH for $430.
In that moment I could choose LiteCoin for $100 per 1 LTC. After a week LTC is
x3 and ETH almost x2. Some one would say wrong choice, for short run it is, but
my aim is long run and I chose Ethereum.