I would personally say Bitcoin. Bitcoin is currently in demand. Many different companies are constantly investing in Bitcoin. At present its price is 45 thousand, in future it will not take more than 1-2 lakh.
Bitcoin is certainly more profitable than gold, but we don't know if bitcoin can last for a long time like gold, the biggest test of bitcoin today is being able to overcome pressure from countries that banned bitcoin, so that bitcoin development can be free like gold.
That is something we all afraid of , about Bitcoin wont last for another 10 years but yeah let's enjoy what we are having now.
Bitcoin may not that standing long like gold but at least all of us gains profit more than what gold holders has in their 10 years of Holding.
so yes it is Bitcoin if we will be talking of our time now.