RE: What charger do you use?
I'm using the new Astroflight charger designed for Lipolys. I own 4 Lipoly chargers at this time, and think the Astro is the nicest. The Triton does a poor job of charging small cells, the apache is a good charger but requires a lot of manual connector changes to set cells and capacities- it gets to be a pain if you have a number of different Lipos to charge. The other charger is one I got from FMA direct a year or two ago. It does an okay job and can handle other batteries also, but there isn't any current adjustment to be made. (That one actually got recalled but they wanted to swap you for a much cheaper model for the same price- so I kept mine since it worked just fine)
Overall, the Astro flight is great with the user adjustable current, ability to handle large and small capacity as well as cell counts, and digital feedback. One of the only drawbacks is that Lipo's are all it can charge!