I will choose Binance coin, XLM, ETH and Tezos ... these are the best altcoins in 2019 and it will certainly be pumped strongly in 2020. Previously I had held Matic for a long time but after It collapsed last week and I lost faith in it, along with all the IEO projects at the Binance exchange.
Indeed we know that this is a problem that is quite difficult and a prolonged year since 2018. But indeed there is enough that can be held for investment, and I agree with the opinion above to be able to hold BNB, XLM and of course Ethereum. but I am very enthusiastic about ethereum because I consider that today a very reliable and not impossible will still succeed after bitcoin.