Originally Posted by
Whisky
Personally, I much prefer MOA or Mil turret adjustments vs a CDS type knob. With the CDS knobs you are limited to the load you had it set up for, as well as other atmospheric conditions. Say you live in the flat lands of ND for example, and want to take that rifle on a high altitude hunt. Your turrets will be off more than you can imagine. For LR work, 500+, that won't work out too well for you.
Get a MOA or Mil system, and learn how to use it. You'll be far better off in the end.