Originally Posted by CTOlsen

Just brought home my new 2016 Sirrus Carbon Comp disk. After riding an alum GT fitness bike for the last 5 years, it rides like a dream. Nice reach, easy shifting, and quiet- no squeeks, clicks, or rubs.
I'm not sure I would appreciate the difference between the carbon and alum comp disk, but I wanted it nonetheless.
Chose the Comp line primarily because of the gear ratio. It has a 34 tooth cassette gear where the others have 32(max). The hills of the Mystic CT area can be difficult to navigate, thus the desire for additional ratio.
Loving it in Mystic!