BTC or ETH if invested for the long term equally have a good profit to invest.
as for if you make the choice I choose ETH by looking at the current ETH price that is still not too high as BTC.
But considering that the supply of BTC is 21 million while ETH keeps increasing I think that BTC will be the best option for investment than ETH.
Just see when the halving occur every few years, it can pump bitcoin price even higher.