Ultegra rear mech help
Looking for gearing help, I'm putting together a new bike and upgrading the groupset, however I've started pulling out my hair a bit... please can anyone help?
I'm upgrading to a Ultegra groupset (6700), running a 11-28 rear cassette on a compact 50:34t
Question: Should I run a short cage or a medium cage on the rear mech ?
thanks in advance