I have always bought those cheap AA battery lights. Always thought they gave enough light to be noticed on the road but, i was never really noticed or respected. I finally decided to drop the big bucks on one of these high end lights. I was very hesitant but, after only one week i am convinced that i made the right choice. The light that this thing puts out on the road ahead shines like the headlights on a Mercedes or a BMW. Now when i aproach an intersection i am definately noticed. On my commute to work i encounter two downhill streches of road. I hit about 35 mph and have not out paced the light beam and this is at 5 am. I also have a Dinotte 400R taillight on the rear of my bike. I am now a true believer, you get what you pay for. High end lights are the way to go if you can afford them.