I'm not a fan of the 3" high way of things, either. If I run into a coyote while deer hunting the midrange trajectory might just put one over it's back. There's a fine line of where to zero, which of course depends on BC, velocity, and all that jazz.

Having an inch or two to work with at 100 is the sweet spot, for me. In most reasonably flat shooting rounds it will give 300 yards of no thought, no LRF needed, pull the trigger to dead animal goodness.