Use this on Red 11-32 cassette so I can climb better. Light weight and good looking. If it is good enough for Alberto Contador, it is good enough for me.
Instead of converting to a much more costly compact component set, I installed a 32T cog with this derailleur with a SRAM Red 32T cog. I am now ascending 7-8% grades without standing up, and doing so a bit faster.