Monero only and don't buy ltc. I can suggest buying monero because I like monero as a coin that I can use to make profit, until know. All you have to do is simple, please using long time period to see where the price moving. Don't forget stop loss and money management to minimalize loss and stress. Depends my experience, monero will survive on real market but ltc need hard work and many good news to start speculation. But remember, there's risk we must face it. Good luck and have a nice day.