I prefer EUR / USD and GBP / USD. For two couples, there is usually more news for them. When you check the charts, you will find it easy for us to follow trends and I think in forex trading I think that the best pair is EUR / USD, this is the only more profitable pair and you get more success in forex trading to use this couple. But the best planning is also important. But I also like GBP / USD, and also I trade this couple really !!!