I purchased a Leupold vx 3i 3.5x10x40mm scope and got the wrong model number, without the CDS feature. I bought it on Amazon. I am sure I can return it. However, is the CDS feature that good to warrant sending the scope back to get the CDS? Or is it that important? Thoughts? BTW, I am planning to hunt with the scope, as it has the increased twilight capability.