Some of the confusion may be linked to different axle to axle lengths coupled with different string angles resulting from the limb configurations. I choose my anchor point based on the string touching the end of my nose. Not so long ago, when I shot Renegade bows, I shot 27 or 27.5. More recently with BT's, I shot 28 comfortably. Now, with Whisper Creek, I shoot 28.5 with my super short Stealth and 28 again with the Innovator. That Stealth is very short (I got it for turkeys out of a blind), and so the string angle is severe. That means to get the string to my nose, I need to anchor (slightly) farther back on my cheek.