Sorry Tarantino, but this round goes to Robby Rodriguez!
I'm happy I had the chance to see the Grindhouse double feature in the theatre. It was such an amazing and memorable experience. I went there mainly for Tarantino... and left as a new Rodriguez fan.
Quentin Tarantino is my all time favourite filmmaker... but he missed the point exactly where Rodriguez nailed it. It was supposed to be over the top, bad and cheesy dialogues, exaggerated gore and action, "edgy" characters, etc.
Tarantino tried too hard to integrate his trandemarks like long dialogues, character development and a slow installation of the violence. In the end, the only interesting character was Stauntman Mike. The dialogues were boring and really didn't serve the plot so much.
The result was: Tarantino made his worst movie, while Rodriguez made his second best after Sin City.