I guess there are 2 camps on this subject.
fwiw.
I've been running the TQ Booster for about a year and a half now.
Spent a day testing with a life rec pack, which used an average of 70ma per 8 min run.
Going back and forth between rec pack and booster, saw no difference in laptimes, or feel.
This was with a Tekin RS 13.5 boosted. Also on occasion with a 6.5 boosted.
Perhaps my Futaba BL-Digital servo is not as hungry as some servos ?
And Servo speed is more than enough for sure.