YOu must be talking about the 2.5-8x36 VXIII scope. I would go with Leupold as their Customer SErvice is well worth it. The scope optically is a better scope then the Burris as well. If you don't want to spend that much money look at a VX-II 2-7 they have the same lenses as the Vari-x III model and should rate in the low 90's as far as light transmittal.