Join Date: Aug 2009
Location: Washington, the state
Each of these good brands has several quality levels (except Renthal): DID, EK, RK, Renthal. Let your wallet be your guide. Also, the major wholesalers' own brands are good value for the money: PartsUnlimited, WPS (Western Powersports), BikeMaster (Tucker-Rocky).
My local mechanic says that he sees no significant difference in the brand of the sprockets.
And, your chain is only about half worn out. If you see red rust dust coming out from under the rollers, it's dying, otherwise lube and ride on. If you carry the chain & sprockets, you'll also need to carry the rivet tool and a way to cut off the stock endless chain; expect many shops to refuse to install parts you carry in--they count on the parts margin as part of their needed income. With 10k, I'd just carry some good chain lube and ride.
"Older people who are reasonable, good-tempered, and gracious will bear aging well. Those who are mean-spirited and irritable will be unhappy at every period of their lives.
"Let each of use properly whatever strengths he has and strive to use them well. If he does this, he will never find himself lacking."
Marcus Tullius Cicero