This will be my second season with them and have only had 1 fail on me...Most likely because the water was to hot, made the plastic brittle and I was pulling it out of a plywood backer at the range.
Otherwise I have several hundred shots on most of them on my practice arrows and the vanes are just now starting to come off some of them after passing thru the targets several times...
I went this route because I wasn't set up with a fletching jig, vanes, glue etc to do my own...
NAP has supposedly improved the glue they use in them too for 2011