Title says it all- looking to buy a set of 130bcd 53/39 rings. Prefer to be FSA super road, Stronglight CT2, or q-rings 'cuz they all share same calibration settings for my PM and I am looking to avoid the hassle of recalibration. However, if there are other rings out there that are cheap enough (or free) then recalibration is worth it. I want as inexpensive as possible (but not worn out or out of true), so used is great! Thanks.