your thread got me thinking about the condition of my chain also. I figured, I have my wheels off so now would be a good time.
Anyway...looking into aftermarket sprockets I cam across this site:
stealth sprocket I may go with one of these if I can get it in something other than gold.
Ive also found this site again:
truth about chains. Seems a little biased but read carefully and it becomes more honest info than biased.
Sorry...back to sprockets. I know our vendors sell aluminum sprockets but I dont see how one of those will last longer than the one on the bikes (I dont think its aluminum but not sure what it is. Anyone now what its made of?). Bike Bandit lists out sprockets at about $76. Only a few bucks more than aftermarket.