if i were you i wouldn't buy any altcoins, i stick to BTc and ETH for now.
This is probably the only reasonable answer at the moment, investing in any altcoin which is not one of those that are established and that have been in the market for a very long time not only seems like a waste of time it is a waste of money as well, money that you are going to need when the next bull market comes and you run out of money very fast because you lost money during the bear market.