I can't speak for the 6HD because I've never even looked in one. I bought the 5HD standard duplex and I've been completely satisfied with it thus far. I was use to a vx3 crosshair so the 5HD was definitely wider but I've had no issues shooting with it close or long range and harvested a couple deer this season with no problems. I picked up a second 5HD for my daughter's rifle and she loves it. They both have bright clear glass, light weight, tracked just fine when I sighted them in and have held zero. I wouldn't hesitate to buy another 5HD based on my experience with these two.
