Mark 4 3.5-10 x 40 with M3 knobs. Knobs don't stick out, you can't get lost in your turret, you also have windage adjustment which you don't get with a CDS, clicks that you can feel 2 provinces over and a side focus. As near as I can tell I can see everything and more at 10 power as I can with a non AO 14 power VX3. It its very much a CDS on steroids, and you can use it for pounding fence posts in the off-season. Korth will cut a custom dial for you to match your cartridge.
I put one on a Gaillard barrelled Sako STW to see what I give up over big scopes and heavy rifle builds. Not much at the extreme long end, and its 10 times the gun for the 0-500 stuff.