Thoughts On Cv Joints

On my old CRX-Si the CV joints used to go out a lot. On my bull, with 72000 miles on it, I'm running with the originals. Not much discussion about them on this board. Is this something Ford actually got right?

So here's the question: Service them, or wait until they fail?

Does anybody have them serviced? How much for the service? If not, how much did it cost you when they failed? Not failed yet? How many miles?

Thanks!