I agree that the RCV's are stronger than any other shaft/joints on the market. The problem isn't so much that you will break them or something else, it is that you will push the truck so much harder than you can with anything else. Therefore, you will break something else. If you understand your truck and it's limitations due to how you've built it, this should not be a problem... Personally, all my wheeling rigs have RCV's. I wouldn't have anything else. I've broken just about everything there is. The problem is when you break an axle, it wipes out detroits, arb's, rubicon lockers, etc. go to RCV and never look back!