I compared the sensitivity with 75W vs 60W. The sensitivity below 50Hz significantly improved with 60W. On the other hand, the sensitivity at high frequency does not really change. As shown in the SQZ measurement in alog70686, the shot noise without squeezing improves by ~1dB with 75W as expected (sqrt(75/60)~1dB), but the squeezing level is also lost by ~1dB with 75W and therefore the shot noise almost does not change in the end.