Is there a reason why you don't have BTC, ETH, LTC, ... in your portfolio ?
NEO and XLM are quite good and have potential, all the others are, in my eyes, risky.
The only reason is that I believe coins such as NEO has a higher growth potential. I know many of these coins are more risky than ETH, but I have only invested money that I can afford to lose. That being said, I am planning to buy some crypto each month - and I believe most of that will be ETH.