well well.....i use them, and I WILL NEVER go back to regular, and i use Futaba 3PK with High Response reciever, it is amazing, it is soo accurate...i gotta warn you, it cost me a fortune, but you get what you pay for, and i am starting to love that sound that digital servos make (teeeeeeeeeeeeeeeeeeeeen....deeeeeeeeeeeeeeeeeeeee eeee)
(2 servos cost me $220)
my tmaxx become so much responsieve now [>:] and there are so many things you can do, i'm still reading the manual [:@]
if you gonna buy digital servos, i would suggest using HRS system