For long term i will invest on ethereum, i think is the only who can bring some profit and even if market drop ethereum will not drop so much as other altcoins.
Seriously, I guess not. Ethereum like other altcoin too, its price will fall drastically if there is comes a crash. Look at the ATH in 2017, $1400 is the ATH at that time and its price fall below $150 when the crash came. So, it's same with other altcoin because the investor of cryptocurrency has the same perspective when decide to buy, sell and hold.