E7 with Castle and Vbar, done.
Soft start is fantastic. Someone else said it on HF, but I will agree, you could spool this up on ice!
Once the head is up to speed, the change rate is crisp. Admittedly I don't load the head as much as you hard core 3Ders, but even I could over speed and bog my castle gov. This thing is rock solid!
Looking forward to pushing this heli this weekend at our local fun fly