I'd go with the RF. I just don't like the look of the XT's silver arms w/Black rings.
I wouldn't say the RF rings are better than Shimano's, I'd say they're equal.
I would have to say that they're probably about the same; weight, stiffness, quality, precision, shifting.... I'd go with the one's you think look best!
Either way, you can't go wrong!
L8r
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