For bowhunting whitetails you can't beat a single pin. If you have a modern bow shooting over 250 fps all you need is one pin out to 30 yards.

I like my single pin slider. I can shoot out to 80 yards with it during practice sessions yet I don't have the clutter when hunting.

I also like the looks of a single vertical pin. You can see so much more of the target that way IMO.