I have use a Burris XTR 6x24x50 B-MilDot for a few months now and it is not a bad scope. The glass is relatively clear and the adjustments seem to be spot on. But......
I just got my Leupold Mark 4 6.5x20x50 ERT FFP Mil Dot in the mail and it is an awesome scope.
The Burris is much larger...