I trade mainly NQ but have also an eye on ES and ER2. Some times, NQ is very trendy, then it's choppy as hell, sometimes ES is the smoothest, then ER2... How do you decide which contract to trade? With hindsight it's always easy to see, which of them would have been the best. My problem is, that I trade NQ and then I get into choppy days and I go through it... After the day I see that ES would have been much nicer. The next day it's the other way round. So it's impossible to jump from NQ to ES vice versa... How do you overcome this? Do you trade both instruments parallel? Or do you really stick with one?