is it worth while to upgrade from 40c lipo packs to the new 50c lipo packs? the current 40c packs get charged at 1c and the new 50c packs get charged at a higher c rating, we'll say 3c or 6c. now i asked around and was told if i'm not planning to heat my packs there's no need to get the 50c lipo's. what's your thoughts on this?