I put two power HD 23kg in my mbx7t I just got. Just received my receiver pack and receiver today so I'll finish it up tomorrow and test them out. I figured for 40 bucks a pop and a free aluminum servo horn with each, if they are bad its not a big hit. If they prove to be good I'll swap them into my buggy and get brushless versions for the truggy.
How bad can they be? I've had cheap fma servos work awesome and my expensive futaba 9450 crap out in a season and stop centering. (Been out of the game a while)