I am considering based on your personal use the laser jammer that jams to gun the most common of todays laser guns. I am considering Anti Laser and the Blinder M20. Which of the two do you feel is the most effective and along this line which is the easiest to install. I know the price of the Blinder M20 but anyone know of the price of Anti Laser? I dont know if Antilaser comes with 1 or two heads. looking at their website it looks like one. if anyone can supply the price of 1 or 2 heads it would be greatly appreciated.