Hate to tell you, but I based my choice on color and it worked out just fine. On color choice, the Pace came up short. Possibly, the Pace sweat band is similar to the one on the Halo doo rag. If so, it's pretty good if you can get past the color.
I know you've got a serious question here, but I wanted that short, downward angled bill for late afternoon sun protection for the eyes, and they all seemed about the same.
Some people are like a Slinky ... not really good for anything, but you still can't help but smile when you shove them down the stairs.