Shimano Saint M820 10 Speed Rear Derailleur
The new standard in DH rear derailleurs - New chain control and silencing technologies exclusive to Saint debut in the new short cage Saint Shadow Plus RD-M820. Unique features include a new silent bump stopper, Shadow Plus chain control technology and a cassette mode converter.
I had problems with a Shimano Zee derailleur and bought this to replace it. Holy crap! It shifts really solid and clean, and is really, really precise. never a mis-shift. I can't say enough about how nice this unit is. I think it works better than the XTR stuff even, I only ran this on an 11-28 cassette for reference. While not spec'd for it, I would assume you can cram a 32 tooth gear in there without issues. You will like it. Shifting with 100% confidence is an awesome thing when you are peddling as hard as you can.