I have used the regulators and gave up on them when I started using two batteries or the bigger Sub-C battery. As CG mentioned, it was just another item that could go wrong. I still don't use the Lipo batteries but Joe brought up A good point, if I did use them I would go back to the regulator. Servo twitch even happens with A 4.8 battery with A full charge but for me it was always my JR servos that did it. Just in the last year I read something that brought that up about the JR servos. It never caused any problems and after the first flight they quit doing it. These were/are {still using them} there high end analogs but I read that the digitals did it too?? Take it for what it's worth, just something I read, most of my high end servos are HTs and I haven't gotten any jitter with them, just my JRs.