Folks, frankly speaking, if compared Leupold 3xi and Swarovski Z3 for low light; I will definitely choose Leupold again and again if taken into account their prize differences. I have owned the two of them and I was really disappointed by the prize of Swarovski Z3 which is almost twice what Leupold 3xi cost and in low light condition, Leupold became so superior over Swarovski. What about the warranty? Leupold has a lifetime warranty and Swarovski at its prize has ten years warranty. To me, it's a cheat. But I am not concluding for anyone else except for myself - take note (smile). I hope I made a point!