Just apply the law of demand and supply to know which is more valuable and profitable. The greater demand with lower supply will increase the value. if the demand decrease with a higher supply the value will be lower. So,bitcoin has a limited supply and will soon be fully mined, the tendency the value will increase because of the shortage of supply especially if whales will hold a biggest part of it. I also think that ethereum will increase more because it always follow the bitcoin. They are both valuable for me.