I was all ready to buy a Razor HD (Gen 1) 5-20x. Now I'm looking at the Razor HD Gen 2's. What exactly does the Gen 2 have over the Gen 1? It looks like the Gen 1's actually have much more windage adjustment, and a tad more eye relief. If the Gen 2's are really a significant improvement, I want one. If they're just different, I might actually get the Gen 1.