It depends what your end goal is... some people want quick wins.. others want long term.
Long term id say eth or ltc - But id recommend Ripple as if it goes into coinbase then the price should shoot up. Which means you could make some quick money then sell/re-invest after people dump.
$12,000 is a lot of money, there should be more money to make in Litecoin than Ethereum because Litecoin is known to go up when Bitcoin does.