Haa...funny, I only ever heard of Campi as more Itaian stuff that breaks a lot. Even my hard-core buddies who were Campi fans, have gone away from it on their bikes. I know there's a sexy appeal to it. I might have to look at it sometime when I have more disposable income.
You have to find a network of campy dealers, but then it's fine. They engineer the entry level groups to have the same feel as the higher end, and the cheaper stuff might be more reliable because they don't use as much exotic lightweight materials. But I think you can get Veloce at around the same price as 105, Chorus is in between ultegra/dura-ace prices.
Overall, my experience is that Campy reliability is really good...just you have to know how to tune cable tension and use the right torque settings. And you can (or were able to) rebuild stuff easier than SRAM/Shimano. There's some give and take, of course - Shimano's cranks are known to have a delamination failure, but Super Record' front derailleurs are known to be a bit finicky, etc etc etc. But things have been so thoroughly bug tested over the past 4 decades it's really splitting hairs.
Full disclosure: I hate the appearance of modern campagnolo group sets. I think they ruined the elegance that was so present in the late aughts. They still work very, very nicely though. I would likely not put them on a new bike though, just because of the aesthetics.
