There are few cryptocurrencies other than bitcoin that will be Monero, Ethereum, Litecoin and so is preferable for me.
That means you hold those altcoins?
Indeed, the best we choose some altcoin to hold for short term or even for long term investment is the altcoin which is in the top 20 position. We will comfortable when choosing those altcoin.
Because as far as I know when those altcoin have a good fundamental factor the price movement will up drastically and when there is no good information the price movement will follow bitcoin price movement.
Actually, I just regretted because I didn't buy some altcoin when the bull run just started, especially I didn't buy LTC. This coin have a good price movement even we can equal its price movement with bitcoin. I'm sure you will get a lot of profit when you choose this altcoin before the bull run will start.