Ive been collecting EAI gold medals because I'm an idiot and I hate money.

I've had people tell me my drivetrain is loud but the chainline is straight and the cog was noticeably smoother than the cog I had on there before. It also sucks they don't make a 12T gold medal since I'm ocd about matchy match ****.

That's really as much of an opinion about a cog that it's possible to have.