I have used both Hitec & JR servos quite extensively over the years and they are both (depending on the model used) great servos. I don't know what your talking about the Hitec with centering problems???
What do you guys think of Hitec servos? I know the pattern guys don't like them for not centering as well as JR and Futaba.
I have never in all the years had a "centering" problem with a Hitec servo???
For giant scale flying of 25% or larger, if you stay in the Hitec "79" series or the JR "87" series servos you won't be dissappointed in their performance! [8D]