All markets move very similar to each other. Markets go from one extreme to another, in all time frames. Crude, ES, AUD, Silver, trade very similarly. One extreme to another, over and over and over and over again. I run the same system over 11 different contracts. I will never understand "ES only traders" It only makes sense in my opinion if you trade 5k lot per trade, where you need good liquidity.
Based on recent closer look at my system, I think I am starting to see what you mean. I want to test my current system with other products/markets.
What else should i look at that have good liquidity and low bid/ask spread? Potentially, i want to explore markets outside of US trading hours.