From top to bottom, some of my personal thoughts:
Shimano XTR are light, smooth, elegant and expensive as Heck! Must use a shimano splined bottom bracket! Shift incredibly smooth.
Race Face Next LP's are actually lighter than the XTR and come in cool colors as well! (Also expensive!) Get the ISIS compatible!
Race Face LP's, cool colors, light weight, strong, good shifting and great warranty. I'd also suggest the splined ISIS compatible over the square taper as well.
Shimano XT's are kinda "plain-jane" IMO, but they're light and durable!
TruVatives have impressed the heck out of me. Their appearance, performance and most significantly, their price!
There are many others, but I would recommend getting either a set of Truvatives, or some Race Face LP's w/rings!
L8R
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