Kyosho white front gold rear was very good. Not any faster than my ae black front white rear combo, but it definitely has a better feel and was more consistent in medium as well as low traction. I don't know why I try other springs when I always come back to Kyosho springs. The ae springs are a close second followed by avid, which always felt raw to me. Lap times are identical between the brands as is quality it's just a feel thing for me. Losi, however is by far the worst of the big bore springs I've run.