KMC X9 9 Speed Chain
KMC chains can be used as a replacement for Shimano, SRAM and Campy chains. They are known to be fairly quiet and have a smooth shifting response. Conveniently, they are non-directional so it doesn't matter which direction you mount it. Rumours also suggest that they are known for getting pretty decent mileage.
This KMC X9 chain is for 9 speed drive trains. They have 114 links and include the well regarded KMC missing link, for when you want to take your chain off for cleaning or some exciting laps.