I couldn't possibly choose. I'm an equal oppurtunist when it comes to polish.
I will say - I buy more LE OPI than ChG. I buy my LE OPI at the salon where I get my hurr did, and the man who does my hair is also the manager. However, he's a bit of a flake, and he'll end up holding on to collections and forgetting to put them out. Finally, the head honcho came down and reminded him he had LE OPIs still needed to put out and sold, and the Circus, Texas, America, Fall & Pirates ended up all coming out around the same time there. Managing to get Mermaid's Tears and Sparrow long after Trade Secrets had sold out was awesome, though.
However, Sally is almost a little too on the ball, I rarely get any ChG LE stuff - sells out long before I remember I should probably check out Sally's more often. But I love what I've tried of the ChG perm. stuff.