Gc is by far my most successful product I have traded. I find it is the most predictable especially with my ACD tools I'm using now. I'm just a 1 contract guy though so maybe it is no good for bigger accounts. I actually find cl to be the worst despite its volatility.
I think it does work well for swing trading. I was referring to daytrading. CL is also great for swing trading but terrible for daytrading. They are just very crowded trades.