Swapping a CV shaft out is a 45 minute job so if it doesn't last 100k miles, it isn't the end of the world. Us regular DIY guys need to realize that what the pro's care about most is avoiding come backs. Parts that have a 7% premature failure rate are a valid reason for them to freak out, but shade tree guys like me may not care so much. I don't like junky parts, but on an old vehicle sometimes it's not worth it to pay 2x for OEM when the car isn't going to be on the road all that long anyway.