Originally Posted by garysol1

I agree.... I installed 7900 with some trepidation after hearing about so many people having a hard time getting it to shift correctly. I read the Shimano instruction guide and made sure my hanger was straight and viola!! It shifted like butter from the very first try. I think some people try to get by with cheaper shift cables or 7800 cables. The 7900 cables are key to good shift quality.
Oh year 7900 over Red for me due to its smoothness. It just feels so refined and precise.