Interesting!!!! I'm having a hard time believing the dropped chain case and 8-tooth drivers are the sole reason everyone is claiming the 17s are that much better then the 16s. Although I believe it's a big part of the equation, I really think there is more to the story. Mapping being the other half of the equation. Why are mapping changes such a 'secret' from the manufactures? I think it's complete BS that information is not disclosed!!!!! I understand there are holdovers that need to be sold, but why not full disclosure on the new? Let the market decide what they want, pay full price for new or the discounted holdover. I bet a lot more MC would have been sold if the whole story was laid out............... It's marketing and big reason why Cat's in the hole they're in!!!!