I just got my new bike, a Trek Madone and had to choose between the SCRAM the Shimano. I really did not like the "clicky" noises that the SCRAM makes. I asked my LBS why it does that and he said to be "different" as Shimano is known for being very SMOOTH AND QUIET!!! Anyway, I went with the Shimano because I wanted as SILENT as I could get. Also, I rode with some women that had SCRAM and I HATED the noises that the gear shifters made!!!! Sounded like it needed some finessing but that was "normal" for the SCRAM!!!