traders should choose the trading pair which is more appropriate to the concept of trading that will be used , if love doing scalping , should choose the pair which has lowest trading spreads.
the successful trader is a trader who actually knows how to manage the emotions level. this is a main difference between successful and general trader.
when you have strong money management then you are able to bring good amount of profit by using any kind of trading strategies even scalping that brings profit in a short time.
traders should choose the broker which is more appropriate to the concept of trading that will be used , if love doing scalping should choose the broker which allows trading concept such as this.