The XT drive train on my Trance after 2+ years has been showing signs of wear, although on my 3rd chain. I started comparing all of my bike's drive trains for answers and just plain curiosity. 2010 XT 9 speed, 2011 LX 10 speed on my newest Anthem, and a frankenmatch with 2002 XTR rear derailleur on my old rigid. Guess who the winner is in crisp, clean, best performance, the old thousands upon thousands of miles XTR. I bought it used a few years ago on a bike that was not well cared for, put it on my favorite 140mm trail bike and rode the **** out of it without a hick-up. Then it migrated to the old b-stone rigid when I bought a new trail bike. If drive train quality and technology trickles down each year, shouldn't my 2011 LX 10 speed stuff be better then the 2002 XTR?