Joined: May 2009
Posts: 273
Likes: 48
From: Brazil, Londrina PR
Bikes: Kona Unit, Kona Kahuna, Kona Dew DL, Scott Big Jon, Trek Checkpoint ALR4, KHS Urban Soul, Haro Team Issue, GT Force Expert Carbon, Bernardi Quadra.
I believe cheaper cogs have a greater chance of not beeing perfectly round, as for how quiet they are, my bike with a 19T EAI cog is a lot quieter then my bike with a 17T All-City cog, but one's 3/32 and the other's 1/8 and that might have something to do with how quiet it is.