Bitcoin. Here is why
Let us go back 110 years to say 1904 and ask the following question: If you had to convert all your wealth to either horseless carriages (otherwise known as automobiles) or horses and keep it there for 10 years, which would you choose? Keep in mind the fact that horseless carriages have only been around for 5 years, and could be fundamentally different in any number of ways in 10 years.
By the way humans had been using horses as a primary form of transportation for millennia, yet in a period of 50 years between 1900 and 1950 they virtually vanished form the transportation scene. Will Bitcoin do the same to gold?
Gold is history mate, use bitcoins, bitcoin will surely overtake gold in future and the best example is present price rise in bitcoin which will take bitcoin to higher level in coming years.