I'm a casual/occasional rider. Just want something that isn't super cheap and will last a while. Made a mistake on my ratio too.. it's 47x18.. it's got an ACS Crossfire on there right now, but I'll probably put that on another bike since its FW is shot and replace my main SS FW. Been reading around online the past couple weeks and saw the SA was better quality than the Shimano... just wanted others opinions