Sorry for the reply delay, just noticed your question today(8/25). I use neoprene straps on both F5 and F100, and none has ever broken. I was first made aware of them by Galen Rowell, who at that time was using Tamrac strap, but I looked at all of them (OpTech, Tamrac, Aztec, others) and selected Optech, which has several different models with different camera attachemnts. I think its sort of personal choice, (like styles of tennis shoes)so look at all of the different attachments. They a)make camera seem lighter and my neck easier b)don't scratch things c)feel (to me)better. To complicate matters, they come in different colors. Will be away for about 2 weeks, now. Hope this helps. Stanley

Stan