I was investing and holding in altcoins too and unfortunately had it all converted to Bitcoin and then made a cashout due to an unexpected emergency. My holding's are Ethereum, BitcoinCash, Litecoin and Dogecoin. I did not bought BitcoinCash I got it for free during August one's hard fork. I invested in Doge though it is undervalued but still I was able to make profit with it. Ethereum and Litecoin are proven and tested safe for long term investment by many so it's worth it when you hold them for long. As of now, I have token holdings like Soferox and will soon have Spectre.ai's tokens namely; SPEC-U and SPEC-D tokens maybe by mid December. If I were you mate, better choose, buy and hold altcoins now while the price is still down.