I only use a single pin HHA 5500 and I personally feel it is perfect. I can slide it up and down for longer shots when messing around. I got it marked at 25, 40, 60, 90 yrds for messing around but when hunting or 3D I put it on 25yrds and leave it there. My allegiance is shooting 305 fps and is only about a 1" high at 20 yrds and less then 2" low at 40yrds. I only shoot 1 deer over 30 yrds in the last 20 yrs of bowhunting so I think it works great for me.

Trytan