Shimano 105 vs 600
What would qualify the 600 group as being better than the 105? I am amazed with the shifting performance of both but coming in from a ride on the Miyata 712 w/105, there could be no appreciable difference. In fact, the 105 group shifts so smoothly, quickly and quietly I am believing it to be better than the 600 tri-color. Is there a significant weight difference I'm not seeing? (I havent consulted disraeli gears just yet)