What type of chain? Speeds?

I was blowing through my HG73 chains pretty quickly, so I've decided to try a Campy-9 chain on one bike. Still seeing how well it will last.

I've got a 6800/HG701 chain on another bike. It seems to last a bit better, but rapid wearing scared me a bit, so I did replace it once, a bit early as my cassettes were much more expensive than the chain.

I do think the old 5/6 speed freewheels were much more durable than the current generation of cassettes. The new cassettes shift smoother, but progress isn't everything.

Perhaps I should consider going back to a freewheel for the winter commuter.