Been flying nothing but the 12120s. I have it in my Carf 1.3 Hawk with life batteries running 12 8711s servos no issues. I have one in my BVM PNP F-16 1/5th Running Lipo 2s. It came with all HV servos. no name and no problems.
Like Zeeb said you have to use a good gauge power wire to the RX from the Batteries and the switch is a Dead man switch. I agree, No need for any regulators or PB. I like the KISS method.
JMHO