This will be about finding what asset suits best your portfolio.
In the current time market uncertain, investors are seeking refugee in assets that have been proved solid, but while gold has been a mainstream asset for as long as humanity invented money, bitcoin have stand firmly as a bulletproof vest despite being highly criticized by a majority of conservative money holders that trends to keep their bucks fay away from any potential risk.
Gold has reached unprecedented mark of four grand in the last days, while bitcoin have not left it behind. While global economy stays as fragile as it can goes, both these assets shiny due to two core factor that dictate value of all assets: scarcity and supply & demand.
Yet, even if there a closer to null chance of loosing money on these assets, closer to null is never zero.
People when investing do not think only about safety, but they also compare the long and short term profitability.
While gold offers a bedrock solid choice, bitcoin has not yet shown any signal that it will decline to point of no return like most people fear. In fact, every day that goes by, people get's more confident about it. And unlike gold, the halving is an 'almost' certain chance of a big leap on satoshis price. We can go even further and agree in one fact: if someone don't known enough about bitcoin, or don't understand it, each day that passes is a day that they can learn about it and get the feel.

Even though gold is a strong investment option, it will never be used on everyday payment, unlike bitcoin. And that certainly is a big plus.
Personally, i would go with bitcoin. What about you? Write down on the comments!