[Nagual]

My battery life after its break-in period (for either the battery itself, or the meter in the phone, depending on your opinion) has improved since I started using the faster WALL charger more often, instead of the PC.

It's very subjective and I think unscientific to assume that one improves the condition of the battery depending on what you use to charge it, if all you go by is a few days of observed behavior. You usage patterns change along with so many other things, it's very tough to tell.

The only thing I know for sure is that the wall plug charges faster, and that's important to me.