yes I agree even though a trader may be a scalper, a thorough analysis of the larger time frame is good enough to make the order right. i use to trade on m5 but i always check m15 h1 h4 and daily chart. big time frame gives a good picture of the market. a good question, I will answer as the best ... many articles say if we should follow the trend ... but, they do not say how to determine the trend ... I also can not tell you what the trend is whether it ... but, i would say the best trend to follow is depends of your trading type ... if you use scalping strategy you should use the trend within 15 minutes or less ...