My LBS is building my first new ride in eight years (28lb trail bike) when the frame comes into stock later this week.
I ordered the build with XT brakes and drive chain, although I've gone for an XTR shadow plus on the rear. The LBS has offered a pretty good deal to upgrade the chain set to XTR (+£175); or in simple terms twice the price of XT I'm also considering an upgrade to XTR shifters. Shifters alone is a fairly easy choice from a budget perspective but to do both is starting to push the budget and make me sweat a little...
I come asking for reasons other than weight to make one, or other, or both upgrades. In your opinion do either offer a marked improvement in feel or performance?