I use a single pin adjustable, my bow is pretty darn fast so 5-25 it doesn’t move much 25-40 it moves a little, and as expected 40+ the site travels quite a bit. I usually practice to 65-70, but then keep my shots within 40, most are within 20.
2 pin sounds cool. There have been times where I lamented not having fixed pins, b/c the adjustable is just one more movement when you are trying to get a shot off, but what I like about the single is that the pin is vertical, not horizontal, meaning the pin doesn’t interfere with the body of the animal. I can use the whole pin to align the the leg of the deer, then move the tip of the pin onTo my target, it makes for wicked fast target acquisition. and has helped me get off at least one shot that came together super fast.