It's time for a new chain for my Dura-Ace 8-speed drive train. Original chain was a CN-7401, current chain is/was some high-end Sachs 8-speed chain (I worked in a LBS... used the staff discount and just grabbed the most expensive one ) . It looks like the 7401 is out of production.
What's a recommended equivalent chain to the CN-7401? I think I can get one more "chain" of use out of the cassette otherwise I'd just make the jump to 9-speed.