[sanddrag]

Thanks for recommendation but for something like this it cannot really be determined which is best. It is a matter or opinion. I personally would rather have rocker switches over a steering wheel, I hate steering wheels on tanks. If the robot is built like a tank, the control interface should be like a tank.

And as for one joystick control, all I can say is "eewww" The real argument against it though is that one joystick control (and I assume a wheel would be the same) actually limits controlability.

Like, say you wanted to make one side run full speed forward while the other side does nothing. How do you do this with one joystick or wheel and throttle?

Two gearboxes, two joysticks.