I found these Lipo tests to be some of the better ones. Kinda shows that the whole more money equals more battery isn't always true.That said I refuse to spend 100.00 on a battery. I never have and probably never will. I have bought several of the lower cost brands turnegy, zippy, and gen's ace. I do have to say my gens ace 3s 40-50c 5000mah vs my 3s zippy 20c 5000mah the winner is GensAce The packs are similar in price actually I paid more for the zippy at the time. I can feel a pretty good difference in the Packs, the Gen's has more punch, and just has a more consistent power band, the zippy sometimes almost feels like it has turbo lag or something. Who knows just thought I chime in on the subject the apparently none of us are qualifies to comment on. LOL
I guess I should compare a 20c gens ace vs a 40c gens ace to get a real result on c ratings but I don't have that option.