I have been been trading on ecoin for a long time and I must say that none of the currency pairs on forex can earn so much proit as 1 BTC can do. So this answers your question that bitcoin trading is the best option as it was not too far when the price was $250 in September-October and it is now $383 ($133 profit in just 2 months if a person bought just 1 BTC).
It's true. After spending years on the currency exchange i believe that BTC is by far the best commodity in terms of trading. A slight increase in value affects your holdings in a more significant way.