If your choice is between ETH and waves I will put all my money in waves, ETH is good but it is not moving much, besides the price is still very high even at this moment, there is a way better chance that waves goes 10x times its value than ETH does and to me that is enough to make me choose waves, even if diversification is a principle of investment what it is the point of investing in something that you know it is not going to give you as much profits.