Quote from AAAintheBeltway:
ER is thinner, more volatile and more jumpy. For same number of contracts, much riskier.
Quote from opm8:
If you want to compare apples to apples then you would have to use half the number of ES contracts to maintain the same approximate level of risk since one ES pt = $50, while an ER2 point = $100.
I've switched to the ER2 for the liquidity, volatility and what I see as more technically "cleaner" signals, ie less head-fakes. However, you would need to get used to the "jumpiness " as AAA alludes to. It can hop a point (10 ticks) in a second and can get crazily erratic in a fast market with prints going off seemingly all over the place. You can't tell this from a historical chart, of course.
--opm8
Quote from brownsfan019:
Right now, I prefer the ES. The erratic moves on the ER2 can take out stops rather quickly. Depending on how you trade, this may or may not be a problem. I like tight stops and to have a 10 second jump take your stop out only to go in the direction you expected is frustrating. [/QUOTe
I agree if you are swing trading , or going for a longer time frame horizon ER2 might be a better deal ( save on the commish + more volatility)be sure to use a wide stop. But for tight indra day plays Es would be the way to go.