I have two HHAs KingPins. One single KingPin and one three KingPin. Both are equipped with a dial in adjustable wheel for yardage to target. I used the single for two seasons and it's still on my older Mathews Solo-Cam. The three pin is on the Mathews No-Cam. I prefer the three pin over the single for quicker acquisition on quick targets, especially on any moving target, or a deer hops in/out a few steps from what I previously ranged. I primarily set the middle pin for 30yrds, which the top is good for 20 and the lower for 40. If I need to make a quick adjustment on the fly, I can easily do that by a minor turn verses the single where as I would have to turn the dial much further to make those 10 yard increment adjustments, and with my poorer eyesight today, that takes too much time for me with a live moving target. I would be willing to sell my single pin and it's in prefect condition if interested and like I said, I used it for two seasons, then in my bow case for two more. I have brand new set of tapes for it as well for your arrow configuration.
So, three pin adjustable on the fly is my go to today. Sight window is not impacted negatively IMO with the three pins over the single. Much better than the five pin I used before I went with HHAs.