I can't say I have experience with Leupold range finding bios. I won't buy another Rangefinder from Leupold. They do not stand behind their product. I had one of their top of the line Rangefinders for a couple of years. I barely used it to the point that the original battery was still in top shape. But, the lcd readout screen went kaput. Leupold's only offer was to "discount" their current offerings. Those discounts were no better than what current market price was for their RFs. In fact, they told me over the phone that they use an organic lcd screen that can fade overtime.