Lot of scope for the money - Vortex Crossfire II 2-7x32mm Rifle Scope, 1in Tube, Second Focal Plane

I have 2 of these scopes both mounted on compact rifles in 308 win. The first one I purchased has performed up to expectations but the other was as disappointment and had to be sent back to Vortex for repair. It now resides on a Ruger 10-22 and is great for that application. My worry is that the other one will fail by fogging up when I need it the most. I will continue using it on the range until my confidence is restored.