Ethereum and Litecoin are very different. Ethereum has had a big run up and some hiccups with icos making further price increases in the short term less probable. Bitcoin has the uncertainty of the update and is unlikely to move much higher until after the update goes smoothly. This leaves litecoin in a good position for a rally before the bitcoin update is finalized. Ethereum is unique and its market value and utility is not yet maximized. For these reasons I'm holding litecoin.