My new Nexus One came pre-installed with CyanogenMod. It's great so far, but since I bought it for software development purposes (initially just learning how to program for Android), should I stay with it, or install the official Android OS (2.3)?
My main concern is compatibility issues with documented API, that is wasting time on debugging problems that shouldn't have been there in the first place.
You're just getting started? It probably won't make a difference, so I would stay with Cyanogen mod. It has the froyo api, and there are very few phones running gingerbread. When gingerbread comes out for the nexus one, then you might want to consider switching, but until then, I would stay with it (unless your unhappy with it while using the phone).