Don't know anything about the oven you are asking about. That said if you have the 240V connection go with it. It should heat up faster and probably reheat faster as 120V has much more limitations on the amount of power you can use. If I'm correct 120V * 5Amps = 600Watts of powers, vs. 240V * 5Amps = 1200Watts. More Watts in this case means more heat.