Just got back from a short test ride on the Breezer; with a Shimano cassette (+Jtek shiftmate), the Record OR mech's shift more solidly and smoother than the XTR they replaced. The front's actually much better, which is interesting since all other Campag front's I've used have been pretty crap.
Regarding longevity, well I'm still running the original Olympus pedals and front hub, used continually since '92 and still buttery smooth. As long as they're serviced when they need it, Campag bearings are second to none.
FWIW, I've a collection of about 30 vintage Campag rear mech's (mostly road). Some of them are so well used that the jockey wheels are almost completely toothless with wear, yet there's no sign of play in the pivots of any of 'em!