Just picked up a Dumas Akula RC sub for a steal- $75. Guy says it'll cost me a fortune to get the battery and charger for it. Well, good thing I've got both of those.

Planning to do a static dive upgrade to it, but I'm not sure if I'd like to go with a bladder and pump, or a piston style ballast. Any suggestions?

Also, general talk about RC- boats, planes helicopters, cars, gas and electric. Love to see what people have.