Thank you for the reply. I actually already got the PI-3431, because I was afraid about the amp draw. It turns out I didn't need to be. I'm used to coreless servos - brushless are MUCH more efficient. At 6v the peak amp draw was under an amp!! The range for me was between .20 amps and .97. Really, really impressive. I'm looking forward to getting this on a track. I'll look into Xpert for RC heli servos, too. I hadn't heard of them before doing research for my new 2WD buggy..