Quote from austinp:
For newer crude oil traders just entering the arena, QM offers the exact-same price parameters as ES values. $12.50 ticks that do often flare to two-ticks in width. Then again, crude oil market ranges 300% to 500% wider than ES just about every day, so a 2-tick bid/ask flare relative to that is relatively nothing by comparison.
They arb so closely that not often will you experience a QM stop getting taken out to the tick while a similar CL trade holds its stop. That does happen, it happened to me a few times but not often enough to be a long-term concern.
Anyone who thinks they can trade CL or QM with teeny stops in tick-scalp fashion successfully might as well just pull their money from the broker right now, pile it on the kitchen table and light it on fire. At least the pain will be quick instead of prolonged... net result will be exactly the same.
If you aren't trading a +2 / -1 ratio in crude, forget about which symbol is better or worse. You are a dead man walking from here. If you use prudent width stops seeking 2x or greater profit exits, the QM is a friendly pair of training wheels to begin your ride.
CL is superior for the reasons everyone stated prior, but the QM is good enough and a fine place to start.