Hmm, today definetly gold! 
But in general I still consider BTC as a stronger asset. Yes, volatility is extraordinary high but it is a fair fee for high rates of return.
These days, it is better if you choose bitcoin because the price of bitcoin is definitely lower than the previous prices and i think that if you choose bitcoin and hold it for a year then you can see great returns from your investment and that is almost a guaranteed because that is the pattern of bitcoin which it shows heavy correction but heavier bounce back. But in general I still consider BTC as a stronger asset. Yes, volatility is extraordinary high but it is a fair fee for high rates of return.