I already know much about both types of motors. I'm just looking at it from a resource and implementation perspective. If I use stepper motors, I feel comfortable monitoring its progress by the number of rotational pulses I send to the motors (If I send a pulse and the motor does not turn is ok for the moment) this will mainly keep the direction straight. If I use DC motors, then I must monitor the rotation (with the micro) of each and adjust the drive power (PWM or whatever). So for ease of implementation, I am leaning toward steppers with gearing sufficient to provide torque to drive my body mass sufficiently. As I said earlier, the electronics and motor information is not an issue; I am fine with that knowledge.
Just mainly looking for feedback on pros and cons regarding each. Weight is a valid issue for comparison, but in this case, it will not make a difference in my design. Actually I am more concerned regarding mechanical connections. Trying to find parts to couple belts, gears to the wheels and motor are probably a bigger concern for me.