What is your investment strategy?
1) If you want to earn as much money as possible so you may risk and buy that shitcoins but you can loose all your money in that way if coin will die or price will be dumped.
2) If you don't want much risk and earn some profits you should buy TOP-20 coins on Coinmarketcap and I should buy Bitcoin only because it's price is on bottom now and Bitcoin has big potential to grow in 2019.