Various Baja 5b questions and a possible new project

[What's_nitro?]

I'm a huge fan of the Sentilon ESC's. It ran my GTP with a 1515/1y, 6s, and 30/40 gears better than a MMM. The slow startup will help the drivetrain last longer- and I assume you are using mechanical brakes since you're looking at the HV110. If you have the batteries (haha) for the 10s/dual 1521 setup then that is what I would do. With 10s there is plenty of headroom on the Sentilons, and 100A would be more than sufficient because the running load is split between two motors/ESC's. On top of that I bet Neil would put you on his Awesome RC's page!