Share your analysis with us!
I also find black's position preferable in some of the main lines (some of which white can't really sidestep). I'm not sure about the setup with Bb5 though.
Maybe someone who plays this as their main weapon against the Sicilian has improvements to share.
grand prix = bad against anyone that knows book lines or can play with some accuracy out of the opening. I've run it through computer programs. Black quickly gains equality and often an advantage depending on the line.