I havent had any comfort issues with the nite-ize. But I also dont find the zl headband uncomfortable yet many do. I do know what you mean about is slightly comforming to the round shape, but mine still leaves slight marks across my head where the edge of the strap is so it must not be comforming enough that the center protrudes into my head any more than the edges...do you wear like a hat or some other kind of padding under the Niteize? the Niteize itself doesn't provide any padding and when you put a flashlight in it, the strap conforms to the shape of the flashlight, so when used as a Zebra holder, you end up with a hard convex edge pressing into your forehead. it's not comfortable without some kind of padding underneath, it kind of hurts actually, and was wondering what you used.