Smatkins,
Good shout. I have the choice of these two and was going to go for the 786.
..and its STEEP round here.. Need them rings!
Shimano XT Rear Derailleur
RD-M781 10-speed SGS
– Dyna-Sys component Shadow Rear Derailleur Total capacity: 43T(SGS)
– Guide pully: Sealed bearing
– Tension Pully: Sealed bearing
Shifting Action: Top Normal SHADOW
Maximum Sprocket: 36T
Minimum Sprocket: 11T
Front Difference: 18T
Total Capacity: SGS 43T
Weight: ca. 234g
RD-M786 RD+ 10-speed SGS
XT now offers a Shadow Plus rear derailleur for trail riders with a direct mount option. Shadow Plus technology reduces chain slap and chain drop while creating a more stable drive train that is dramatically quieter.
The internal clutch system maintains chain tention througt the roughest of terain, fully adjustable with included tool and built in on/off switch round out the Shadow Plus RD.
Details:
– Shadow-Plus technology with stabilizer
– The stabilizer reduces derailleur hitting the chain and prevents chipping
– Easier and more efficient than chain devices with rollers
– Direct Mount ready
Gears: 10-speed
Material: Aluminium
Version: long (SGS)
Max large sprocket: 36 teeth
Min large spocket: 32 teeth
Smallest sprocket: 11 teeth
Front chainwheel teeth differ