Litecoin seems safest in the short to mid term, given the uncertainty of what segwit activation will do to Bitcoin on August 1st. Plus, fees are lower and the network is much faster. Currently at ~$45 a coin, and many say it's undervalued.
Depending on how Segwit goes, Litecoin could see a quick boom while other coins drop. It'll be a good time to reposition your crypto assets and buy some cheaply. The best strategy is to hold long term.