i run airtronics in my 1/8 scale truggy with no problems. i prefer to use airtronics since i've used them since i got into rc. i'll be using this same setup in my 1/8 on road car also.
i currently run the 94773m (digital) on the steering and 94357z (analog) on the throttle. never had any problems or breakage in the two years with my jammin x2 and i ran the analog 94359z and 94360z in the losi truggy before that and 94360z in 1/10 electric touring.
i personally have not used a digital servo for throttle control but from what i've read on this sight it's not needed and is a waste due to the fact the servo is constantly trying to center it's self. it just consumes more of the receiver pack.
use the airtronics with confidence!