I think that both these coins will be even more popular than now. Therefore, I would prefer to have both of these coins in a 50/50 ratio. Ethereum is convenient for participation in ICO, on its basis hundreds of new tokens are created, which can be stored all in one place, it is convenient. Especially with the solution of the issue associated with scaling and the price of transactions Ethereum will become more popular than now. The main advantage of Zcash is his anonymity, due to which he enjoys great popularity. This distinguishes it from Ethereum, because Ethereum's blockchain is transparent and everyone can observe the movement of funds from one purse to another, as well as the amount and so on. Anonymity Zcash can also become popular among those who keep their funds in offshore and in this case its price can rise sharply.