If I had to choice I still would go for Gold. Gold has been there for decades and already a reliable investment. Bitcoin is still too unpredictable. Maybe the potential of Bitcoin is much bigger but it's also still more risky.
Yes gold is very reliable investment but one can invest in bitcoin for quick profits but in small quantities. I put more money in gold than bitcoins.
I would also put more money in gold if I had money to invest. Gonna change jobs and gonna earn a much more so hopefully I got a lot to invest.