Here's a fun fact:
If you charge your LiPo on an Orion charger, and then remove it when it's "done" and put it on a Checkpoint charger, the battery will continue to charge on the CP for an additional 15-20 minutes. It will take between 50-60 mah during that time. The CP's charging algorithm seems to charge the battery a little further than the Orion, but that tiny bit takes an eternity to get into the pack. I guess it's a function of the CC/CV algorithm, and also how far down the charger will go before it shuts off.
I asked Linger about this when I observed it, and he said it's normal for chargers to have a slight variance between them, and how they handle CC/CV.