I've had one for a few weeks now, and though I haven't been able to shoot over it a whole lot, I already feel comfortable recommending it. I wrote up a short review for my website (link here), but the bottom line is that it does work as advertised. It is absolutely stupid simple to set up and use, is incredibly lightweight and portable, and I have had zero issues with it. Its single drawback is the cost, but in my opinion it is worth every penny. The term "game changer" gets thrown around a lot, but in this case I think it is deserved. I could really see it being a boon to match directors who want to take a lot of the headaches out of setting up a chrono stage.