I have searched and got mixed opinions from what I have read. I have 17000 miles on my stock chain and sprockets. I am wanting to go with steel sprockets, and I am not sure about the chain. What brands and which chain is the best? (o-ring,x-ring) Cost isnt a issue. Should I keep the same amount of teeth on the sprockets? I am planning on next year getting a turbo for the bike, so I would like to have the best possible products. Thanks in advance!!