I have a Sightron SII 3.5x10x50 on my 270 and I'm very pleased with it. I have a 3.5x10x40 Leupold vari x III on my browning bar and I can't tell any difference other than the 50mm being brighter. Both scopes are crystal clear! I would not hesitate to buy another Sightron scope.
Thanks for the input, thats good to hear. Most of my other scopes are LR or Illuminated Leupolds, I have a couple of 4-16 Nikon Tacticals and a Docter Optics. I am pleased with those, I just thought I would give the Sightron a try.