I have been using the Leupold 1000 TBR for a number of years. As I shoot at longer distances, 400 and out, I am finding that it is having trouble picking up a target. Some deer sized animnals are not reflecting back like I think it should.
The math inside for your angled shots is a big help.
I had the plesure of taking a man PD hunting this spring and used his swarovski. I was impressed with the response of the unit, and the range it would acuire at. Now saving up money for the 8x30 rangefinder or the EL10x42 binos with buit in range finder.