Which is better? I need Lipo technology.

[captain harlock]

I looked at the FMA lipo packs at towerhobbies( 3200-6400) and they are reasonably priced, but not to be shipped via air, because its "flammable". Now, I dont think that lipos are really prevented from being shipped via air in all hobby shops. Some other places like FMA DIRECT itself or FineDesignRC or ThunderPower do not give such notes and I'm starting to really consider these types of batteries for their amazing characteristics
and exceptional performance. I want to get it from towerhobbies along with the balance pro charger, however, I can get the charger, but not the batts, so...what should I be doing?