I totally agree with views above.
Like Dave I have been using LiPo for a long time (aircraft) and in these years my brother and I have had no problems whatsoever.
I have had problems with NiMH venting, cells killed and all sorts of potential dangerous problems, yet not had one issue with LiPo. I can remember when my bro was playing around with the electronics and prop on his F-16 pusher (might have been his A-10 Thunderbolt ducted fan...) anyway the fuselage was old so he pushed it to the max. The LiPo got so hot it melted the foam! And yet still usable. If that was NiMH would have exploded no doubt at all.
Best plane cells are without a doubt FlightPower and LoongMax. LoongMax are very cheap too, and very well made. I am loving them at least anyway.
LiPo dangers are a total joke. Firstly don't buy crap cells, you wouldn't with NiMH so why with LiPo? Take good care of them (
http://www.glypo.com/guides/lipo/) and you will be laughing. Amazing how many people "peak" LiPo, it is these idiots that will create the accident, not the cells.
These are much safer than NiMH, yet they don't force NiMH users to charge in sacks. Totally crazy how bad this myth has spread around
