I think all the coin you mentioned is a potential Coin in the future. it's up to you to trade or long-term investments. but I think the bitcoin for the long term without thinking twice about it, because the price of bitcoin is higher than altcoin. and I think altcoin we use for the short term and for daily trading. every day you have to work to trade altcoin as they go up and down, by looking at the state of the market. and it will add benefits to you.