The first set of 3M 8681 tapes had about 100 hours on them before I noticed a nick in one that made me want to replace it. I had to order more tape, since originally I only ordered enough for three blades. After replacing that one blade's tape, I noticed two small splits within a couple of days.

My first set of stainless tapes lasted about 90 hours before they were beat up enough to replace them.

I might go back to one of the clear 3M tapes sold on Spruce, though they don't have the best appearance on the prop.

Also, I've wondered if my prop takes more of a beating than a taildragger's prop.