I recently put in an order in for a GAP-10. I can't wait to get it in my hands. I am currently looking/reading about different scopes for this rifle. As of now I am seriously considering NF's 3.5-15x50 NXS and Vortex's Viper PST 4-16x50. By all accounts I am open to more suggestions. I was hoping you all could share any opinions (pros and cons) you may have encountered with either scope. Is 1k worth the difference? Durability is very important to me, I want this scope to last a long time. Thanks fellas