It is time to upgrade the components on my 08 Specialized sirrus. I want to do shifters, brake levers and derailleurs [cassette too if need be]. I'm fine with with either sram or shimano components. Everything on the bike now is stock [except for wheels, tires and handlebars]. I'd like to get the best components this time and be done.
current bike specs - http://www.specialized.com/us/en/bik...s/sirrus#specs