wheels
I wonder if anyone has tried relacing a Fulcrum wheel? The rims are a cruel joke for a wheelbuilder let alone the amateur spoke changer. The factory tension is very high to compensate for low spoke counts and this often leads to spoke breakage. Most Fulcrum owners (the 3's especially) put them in for relacing at some point and thats when the trouble starts. As I said, these are entirely disposable wheels and will only lead to short-time fun and long term expense. Fulcrum have invested heavily in advertising and marketing and, well, you know what that usually tells you.
The hubs (for the Fulcrums I've seen) are nothing like Campagnolo - they have lower spoke drillings, use cartridge bearings (not always a benefit)and they share no transferrable parts. The 3's are £350 and for a 50-100g reduction in weight over custom-made wheels with easily available parts, make no real sense whatsoever.
The Campagnolo hub body (on Record at least) has a grease nipple which the user can inject at regular intervals to increase bearing life. (I have yet to see a properly regulated rear hub lasting less than 10 years).
One other benefit of getting your wheels built for you is that you can buy the rims and hubs in the vintage you require to suit the rest of the bike.
Sorry if thats sweepingly stated, but its from experience.
Anyway, if you are using Shimano - DuraAce hubs are excellent and available in 28,32 & 36 hole drillings. Forget the 16 & 24h unless you are a junior.
Edit: If you are put off by Shimano woes, try DT, Hope or Chris King. If you buy second-hand or in the sales you will have a great pair of hubs to start with.