one man's food they say is another man's poison. some like to trade varieties of currency pairs while there are some that will take just a pair and fall in love with that pair and try to understand everything about its movement as much as they can. the downside to this is that there are sometimes when there will not be signals on such a currency. therefore such a trader will rather choose to stay on the sideline. whichever way, each has its own advantage... i will say just follow your bliss!!!!!