The Buck Mark scoped have been great. They collect a lot of light, and have both held a good zero. Yes, the sun shades are removable. Mine is normally off.
I bought the VTR as a "reward" for my successful 2009 sales year. I bought it more for the looks and the lighter weight than anything. I looked at the Sendero and the SPS rifles when considering a purchase. All are fine rifles. My VTR will be a LOT easier to tote in the field than the SPS, with close to the same accuracy. The SPS is more accurate and is 2 pounds heavier (estimate). I wanted a good combination of a field/bench/so called "tactical" type of rifle, and the VTR fits for me. My other .308 is an L1A1 which will hold 2" groups at 100 yards open sights. I figure between the two I can take game at close to "long" (500 yards) range.