Which cryptocurrencies should you keep before 2017 ends?

Charlie Lee, the creator of Litecoin. Someone who knows a thing or two about cryptocurrencies, holds the following coins:

Bitcoin, Litecoin (obviously!), Monero, Ethereum Classic and DeCred.

After doing my own research, I am coming to the same conclusion. Those collection of currencies (in that order) are the best of the best. Best use-cases, development teams, Monetary policy, Stability, track record, community (spare bitcoin!) ..etc.