HHA single pin slider for me. Started many years ago with 3 pins, then used a 5 pin for a few years, wish I'd had the single pin slider long ago. I have it dialed in out to 70 yards, and I may shoot a critter at that distance someday, or close to it. Already have shot one antelope at 61 yards, and an elk at 51 yards....If a critter at these longer ranges lets me use the rangefinder before taking a shot, it's in grave danger.