The top of the line Vortex stuff will run all day with the others. I have a bottom of their line (diamondback) scope that fogged up on the inside. I sent it back to them and they fixed it and returned it to me within 10 days of me sending it in. The $200 scope was either 6 or 7 years old. Warranty and customer service was top notch for me. If I had the big coin to drop on glass, I'd stick with vortex. I own 4 pieces of gear with their name on it and it all serves me well and none of it is top of their line stuff.
