For me to get decent cheek weld i need x-high or higher mounts on ars. Ive actually developed a fondness for the weaver quadlock see thrus. Those are the right height for me, but arnt quite as sturdy (seeming) as id want for a big heavy scope.
But were i going to use the gun for more precision work, id go with a decent one piece offset mount. Those are usually just about perfect for me.
Again its gonna be where your eye position is with the rifle shouldered, that dictates mount height on an ar.