Best low Profile to handle 7.4 volts
 

I did some searching online and it looks like the torque ratings for all the major brands for low profile servos sits around 120-125 lbs at 6 volts, so it appears that the differences are simply coming down to cost at that level. What I am looking to do is ramp my servo up to 7.4 volts. Anyone done any testing to see which brand of low profile servo holds up ok to being run on 7.4 volts? The major brands I am refering to are hitec, futaba, Savox, and Spektrum. Thanks.