Originally Posted by or8ital
Buy whichever battery is most expensive. Then you can't use budget as an excuse for losing.
Listen to this man. He speaks from experience.
In all seriousness, there is a thread on here with several comments from Danny from SMC stating that most of the ratings above 40C are likely BS. There are only a few manufacturers in China that actually produce the LiPo cells, so the performance difference comes down to quality control, and fancy packages.
For the large majority of club racers, none of this really makes a difference on the track. Buy a brand that you can afford and feel good about buying.