I have always found Chorus products to be of the superior quality you expect from Campy at a very reasonable price when compared to Record or Super Record. There might be a slight weight penalty compared to the Record and Super Record versions (as is advertised with this cassette), but I have never noticed it on the road. I currently use all three levels (Chorus, Record, Super Record) cassettes on various wheelsets. This time I opted for the 11/27 gearing to have a sort of bail out gear on those bad days when you try to go just one climb too many. So far so good and I expect lots of miles from this cassette like all other Campy cassettes I have owned.
The cassettes from campagnolo are the best, last a long time easty to clean and shift is flawless
These cassettes are made in Italy
If you compare to other cassessettes they look like works of art
My only complaint is they are significantly more expensive than Sram and Shimano components
I have always been partial to Campy
Bought this cassette for my trainer wheel and it has worked great. Note that some older Campy hubs are not compatible with 11 speed. In other words, don't assume an old campy 10 speed hub that you use for a trainer will work with your 11 speed group.
I do most of the work on my bikes and changing the chain and cassette is normal maintenance, especially my winter bike. The Campy products are the best quality and I have never had a problem with broken chains or early failure. Their website is great for technical information and product specifications. I would also recoment their chain tool as an important additionb to a home mechanics tool kit.