You can invest in icx. It has a incredible potential.
What kind of potential for example?
I would go 50% Expanse EXP & 50% Icon ICX right now
But why? Can you give more info?
I think almost all coins are buyable now but firstly you can buy Ethereum, NEO, OmiseGo and INS Ecosystem.
We all know Ethereum, Neo and Omisego but why do you suggest Ins Ecosystem?
As you can see people only tell you coins they hold, they don't even explain why you should buy.