I was disappointed in a chain that was recommended by another store, I mixed chain with cassette only because of the quick link on the chain I purchased at the time. Shimano now offers a quick link, thus I replaced my old chain with the Shimano and the chain made a noticeable difference, less noise and cleaner shifts.
This chain include a quick link for connecting the chain, not the usual connecting pin. Unlike quick links made by other manufacturers this one seems to require a special tool to secure the connection. I tried pulling on the chain which works with other brands but I could not get a connection that didn't simply fall apart when the tension was released. Why couldn't they have included an old fashioned connecting pin that requires nothing more than a conventional chain tool?
As a heavier (190lbs all muscle) cyclist and the fact that I ride a lot of steep hills I tend to go through chains a little faster than the average person. This chain hold up well and I would recommend the Ultegra or the Dura Ace chain. If money is tighter go with the Ultegra.
Great product. Works great with my Ultegra derailleurs and cassettes. But when you screw up the chain length, you will need either 1or 2 extra connecting pins, depending on whether it is too long or short, respectively.
Usually happy with Shimano and especially Ultegra, but this time I got a very noisy chain. (Yes, it was on the right direction.) It sounded like it was always rubbing the front derailleur, but it wasn't. After trying different lubes and fiddling with it, I noticed that the chain would jump on both of the front chainrings, and in several different places along the chain (i.e., not just a quicklink problem). I suppose I could have worked each link independently to find the culprits and see if I would get them to loosen up, but I just replaced it with a Sram, and now the bike is quiet as a mouse. Guess I just got a bad one.
I'm a big boy (245 lbs) and usually ate at least one chain per season if not two with Ultegra 10 spd chains. After upgrading to 11 spd Ultegra and chains I now get about a year and a half to two years from the newer Shimano 11 spd chains. Articles suggest using these chains for 10 spd drivetrains as well because of their superior construction, materials, and longevity.