First let me say that I love my HK but hated the stock sights, so the first order of business was to put on some nice Tritium, Trijcon's. That was a few years back, they are great in low/no light but now I see this http://www.truglo.com/content/prod_handgun_sights/tritium_fiber_optic.asp so any of you tried these new units if so how much and how do you like them?