I used the Limbsaver Prism sight last season. Last year's model was very well built but a few flaws. The light catching dome does indeed work to put light into the fibers. The fiber is very well protected and the pins are bullet proof. However, the pins are very thick, light silver/grey, and had some wobble in the pin channel. There were no markings on the sight for adjustment. The bubble is well protected, but sunken into the housing so that my peep blocked it when my peep was lined up with the pin guard. The 3rd axis adjustment is robust. The most attractive feature to me was that I don't think I could break anything on this sight if I tried. Overall, a very good sight...but a little expensive. I think the 2008 model will correct some of the flaws. Any others use this sight last season?