Just my 2 cents: The C rating of a battery is only "important" if you know your motor system is going to pull large amounts of current (amps). OR if you notice that the 20C packs you're using are getting HOT under normal running conditions. If the motor and ESC temps are normal (ESC <125F , motor <170F) but the battery is getting over 110F, the battery pack could be getting stressed by the system trying to pull more current than it can deliver. In that case, going to a higher C-rated pack will give you a pack that will have a longer useful life because it won't be getting so hot. Electronics + Heat = Bad
