I recently bought a DID standard X ring chain with pattern sprockets via eBay. I have seen similar on Wemoto and anything in the �75-�85 is pretty good.

One way to help to slow wear is to replace the front sprocket when it shows signs of wear. They are about �15 tops but as they are taking much more stress than the rear sprock, they wear fast and then accelerate the chain wear. Have a look at ones that are a few thou old and you will be suprised.

Oh, and fit a chain luber.... i recently fitted a Loobman and think it's far better than the Scottoiler that I took off at a fraction of the price. If I want more oil on the chain I can sort it in a few secs and they also take bog standard oil of your choice.