It depends what people you are, if you want to look for more excitement, investing in BTC is obviously an exciting thing, that feeling just like riding the roller coaster, one second your mood up to heaven, the next second your mood may down to hell. But if you are a conservative invstor, i think invest in gold is a good choise.
Anyway,gold and btc both are good thing that worth to buy.
both of them are good to buy because both of them assets that can become profitable in the near future. I think it will depend on how much money do you have. Are you rich enough to buy a lot of gold bars or are you just a small investors who have money to buy satoshi. It also depend on what you like where it is really depends on what skills that you have.