I will suggest Ripple, Monero or IOTA. But as the guy above said you could try with some of the new upcoming ico's like eMarketChain or just invest some time to check what is coming on pre-sale and main-sale. I prefer to invest in new ICO's with a very low starting price: under 0,1$. Normally after the main sale, they have at least 100% profit. Will check now eMarketChain and will try to calculate the starting price. Will reply again with the result of my research.