I've sailed several spinnaker boats and own one. Currently, I have no spinnaker damage and I've raced the boat in about 10 regattas so far - 7 of which had awesome wind. I think the I20 style endpole snuffers were very hard on the spinnakers. Snuffing the spinnaker on the wrong tack doesn't help either (although I'll admit to doing it occasionally in sticky mark rounding situations). Spinnaker wear can be avoided with a proper retrieval system.

That being said, While on what should have been a much faster boat, I've been chased by Rick and his hooter equiped Hobie Wave! That thing will go! I can also attest to the hooter equiped Hobie 14s staying with me and my Nacra 6.0 up and downwind in the super light stuff! If there was a class to race them in, the hooter would be interesting.