I started out on Shimano and a year ago I got my bianchi with veloce components. I'll NEVER go back. I love my campy stuff.
Now if you don't like the sound it makes while you are coasting, you might not like campy. But I love it. i love the way I can shift easily, the way it fits.
On my shimano geared bike, it always seemed counter-intuitive. It's hard to go back and forth for me.
There is a Campyonly fan club, there is lots of good info there.