Hmmmm I would like to say gold for the safety of having some fiat in physical form as with BTC it is easy to gain as it is easy to lose however, with the volatility in recent times the rewards are just as great as its risks. It takes a calm, calculated individual to really take advantage of the markets
Yeah, with bitcoin I feel that BTC = high risk/high reward with Au = Low risk/low reward ... Though it is well know that gold has a general trend for steadily increasing in value over time. It is the best long term investment to make. If you want to speculate and feel like the market is going to produce a huge "pump" in the bitcoin world, I would suggest investing then; but all in all it's a gamble.