Re:
drechsler57, How much are you asking?
This is New territory for me,as my knowledge of modern road components is very limited,ie almost Zero.
I was thinking along the lines of 105,or ultegra, However, I want to run 25 or 28mm tyres as these are for an Audax bike.
I would consider other models and,as always for me the price is a significant factor as income is fixed and quite limited.