I want to put ultegra groupset triple on new bike as using mainly in europe in mountains and compact with 50/34 front and 11-28 rear cassette does not give me the right gears for mountain or right range for all eventualities. Want bike light as possible. Actually Sram Rival was my first option but bike shop advised against SRAM.
What Ultegra should I ask for - saw that 2012 ultegra 6700 is lighter (150 grams) than previous version but also see chainset model 6703 and talk of hollowteck technology - a bit confused but want to give LBS clear instructions. Also what is view on Sram? Also what is weight diff between rival and ultegra triple?